# Simon's Open Link List #

Website Checker

- [MS MARCO](https://microsoft.github.io/msmarco/) A question-answer dataset for finetuning embedding models
- [Testcontainers](https://testcontainers.com/) Run your unit tests in real docker environment. Docker all the things!
- [Colorblind Simulator](http://mapeper.github.io/jsColorblindSimulator/) JavaScript library to simulate different kinds of color blindness
- [Roast.so](https://roast.so/) Landing page roasting service for 50$
- [Chrome UX Report API](https://developers.google.com/web/tools/chrome-user-experience-report/api/reference) API for getting daily updated live data data from google chrome UX reporting
- [Google PageSpeed Insights](https://developers.google.com/speed/pagespeed/insights/)
- [WebPageTest](https://www.webpagetest.org/) Website performance checker
- [Equal Access Accessibility Checker](https://addons.mozilla.org/en-US/firefox/addon/accessibility-checker/) A web developer tool that checks web applications for accessibility issues
- [Google Webcache](https://webcache.googleusercontent.com/search?q=cache:https://simon-frey.com/links/) Get the last version of a page cached by google bot
- [OnWebChange](https://onwebchange.com): Track any webpage for change. I mainly use this for release pages if I wait for a new version. (Also works on github)
- [Lighthouse Parade](https://github.com/cloudfour/lighthouse-parade) A Node.js command line tool that crawls a domain and compiles a report with lighthouse performance data for every page.
- [Test My Site](https://www.thinkwithgoogle.com/intl/de-de/feature/testmysite/) Google tool for website optimization
- [Accessability checker](https://www.deque.com/axe/) Check basic accessibility metrics
- Performance checker
   - [Request Map Generator](https://requestmap.webperf.tools/) Visualize the requests on your site
   - [Gtmetrix](https://gtmetrix.com) Performance checker
- SEO checkers
   - [Backlink checker](https://www.seoreviewtools.com/valuable-backlinks-checker/) Check what backlinks your site has
   - [Domain rank checker](https://www.seoreviewtools.com/domain-rank-checker/)
   - [Google Essentials Checker](https://web.dev/measure/)
- Mobile Checker
   - [Mobile Friendly Test](https://search.google.com/test/mobile-friendly) Test if your site works good on mobile
- Privacy website checker
   - [Blacklight](https://themarkup.org/blacklight) Check website for privacy violations
   - [Webkoll](https://webbkoll.dataskydd.net/en)  Check website for privacy violations

Fun

- [Open Infrastructure Map](https://openinframap.org/#8.11/48.032/12.147) Super interesting to scroll around in
- [Look Scanned](https://lookscanned.io/scan) Make a PDF look scanned. Nice for testing file parsing or for interacting with german state (as they like scanned stuff)
- [wanderer](https://wanderer.to/) Open source fediverse komoot - a decentralized, self-hosted trail database
- [What a week huh?](https://simon-frey.com/whataday/index.html) TinTin Meme of captain complaining about day

Domains

- [Ungrabbed](https://ungrabbed.com/) Domains right to your inbox
- Dropcatching
   - [Dropcatch.com](https://www.dropcatch.com/) Domain dropcatching service
   - [Park.io](https://park.io/) Domain dropcatch service
   - [Namejet](https://www.namejet.com/) Domain dropcatch service
   - [Snapnames](https://www.snapnames.com/) Domain Dropcatch service
   - [Dynadot domain backorder page](https://www.dynadot.com/market/backorder/)
   - [Godaddy domain auctions](https://auctions.godaddy.com/)
   - [Window Shopping expired domain names](https://www.deepsouthventures.com/window-shopping-expired-domain-names/) Guide on how to catch dropping/abandoned domain names for your next great side-hustle

Leadership

- [Who's got the monkey](https://hbr.org/1999/11/management-time-whos-got-the-monkey) Management lesson on delegating
- [Lara Hogan](https://larahogan.me/blog/) Blog about leadership
- [44 engineering management lessons](https://www.defmacro.org/2014/10/03/engman.html)
- Tech interviews
   - [Guide on hiring for startups](https://wasp-lang.dev/blog/2022/08/15/how-to-communicate-why-your-startup-is-worth-joining)
   - [The Guerrilla Guide to Interviewing](https://www.joelonsoftware.com/2006/10/25/the-guerrilla-guide-to-interviewing-version-30/) Joel Spolskys guide on how to interview for engineering positions
- Remote-first company
   - [Guide for building remote teams](https://www.indiehackers.com/post/how-to-build-a-remote-global-long-lasting-team-a89f8e111c)
   - [GitLab's Guide to All-Remote](https://about.gitlab.com/company/culture/all-remote/guide/) As GitLab is a remote company they have a lot of experience in remote leadership. This is their massive handbook on how to do that best

AI

- [llm-sanity-checks](https://github.com/NehmeAILabs/llm-sanity-checks) Should you use an LLM for your problem? (often not)
- [Pocket TTS](https://kyutai.org/blog/2026-01-13-pocket-tts) Small english TTS for local deployment
- [Prompt caching: 10x cheaper LLM tokens, but how?](https://ngrok.com/blog/prompt-caching/) Really nice blog by ngrok on how llm prompt caching works (technically)
- [DINOv3](https://ai.meta.com/blog/dinov3-self-supervised-vision-model/) Self-supervised vision model
- [Jan.ai](https://www.jan.ai/) Easy-to use open source AI tooling
- [Inception Labs](https://www.inceptionlabs.ai/news) Diffusion based llm. Generates entire text at once, hence is faster
- [FaceFusion](https://docs.facefusion.io/) Self-hostable face-swapping tool for videos
- [DeepFilterNet](https://github.com/Rikorose/DeepFilterNet) Open source Noise reduction model
- [RLHF Book](https://rlhfbook.com/) Reinforcement learning explained as free online book
- [Machine Learning in Production / AI Engineering](https://mlip-cmu.github.io/s2025/) CMU course that covers how to build, deploy, assure, and maintain software products with machine-learned models
- [RAG Metrics](https://docs.ragas.io/en/stable/concepts/metrics/available_metrics/) List of metrics that can be used for developing an RAG system
- [NSFW JS](https://nsfwjs.com/)  NSFW detection on the client-side via TensorFlow.js
- [Opik](https://github.com/comet-ml/opik/) LLM Tracing + obersevabilty
- [PaperQA2](https://github.com/Future-House/paper-qa) RAG tool for scientific papers
- [marker](https://github.com/VikParuchuri/marker) AI library to convert PDF to markdown
- [fluxgym](https://github.com/cocktailpeanut/fluxgym) Local FLUX LoRA training UI with LOW VRAM support
- [pinokio](https://pinokio.computer/) Installer for local AI applications
- [BAIOSPHERE - The Bavarian AI Network](https://baiosphere.org/) Events and stuff in bavaria around ai. Quite intertangled with the unis
- [Fish Speech](https://speech.fish.audio/) Voice Cloning opensource AI Model
- [GGUF My Repo](https://huggingface.co/spaces/ggml-org/gguf-my-repo) Quantize any huggingface LLM repo
- [R2R RAGs to riches](https://r2r-docs.sciphi.ai/introduction) RAG framework
- [samura](https://github.com/yangchris11/samurai) Zero shot video segmentation model which seems to outperform SAM2
- [ContextCite](https://gradientscience.org/contextcite/) Find cites for LLMs responses. Quite interesting for advanced RAG usecases, where you don't want to rely on the LLM just returning somewhat invented cites.
- [exo](https://github.com/exo-explore/exo) Run your own AI cluster at home with everyday devices (e.g. a few mac minis m4)
- [smollm](https://github.com/huggingface/smollm) SmolLM2 is a super small LLM by huggingface. Works quite great for english textg
- [nano-graphrag](https://github.com/gusye1234/nano-graphrag) A simple, easy-to-hack GraphRAG implementation
- [HippoRAG](https://github.com/OSU-NLP-Group/HippoRAG) Graph based page-rank. Implementation of the paper
- [fast-graphrag](https://github.com/circlemind-ai/fast-graphrag) Graph based RAG framework, extracting entities
- [Artificial Analysis](https://artificialanalysis.ai/) Independent analysis of AI models and API providers
- [Scrapegraph](https://github.com/ScrapeGraphAI/Scrapegraph-ai) Python AI Website scraper
- [PDF Extract API](https://github.com/CatchTheTornado/pdf-extract-api) OpenSource PDF to markdown converter ai
- [Thorsten Voice](https://www.thorsten-voice.de/) FOSS german TSS engine
- [Midship](https://midship.ai/) AI tool to extract structured data from documents
- [Subtitles.org](https://www.opensubtitles.org/en/search/subs) Download movie and TV Series subtitles, great for playing with it with LLMs
- [The AI Timeline](https://x.com/TheAITimeline) Twitter account sharing latest AI papers of the week
- [dom-to-semantic-markdown](https://github.com/romansky/dom-to-semantic-markdown) DOM to Semantic-Markdown for use in LLMs
- [SAM 2](https://github.com/facebookresearch/segment-anything-2) Video segmentation model
- [AirLLM](https://pypi.org/project/airllm/) Library that optimizes inference memory usage
- [vLLM](https://docs.vllm.ai/en/latest/index.html) System to run LLMs in a distributed (multiple computers with GPU) manner
- [llamafile](https://github.com/Mozilla-Ocho/llamafile) Distribute and run LLMs with a single file.
- [Axolotl](https://openaccess-ai-collective.github.io/axolotl/) Tool designed to streamline the fine-tuning of various AI models,
- [Text Generation webui](https://github.com/oobabooga/text-generation-webui) A Gradio web UI for Large Language Models
- [Surya](https://github.com/VikParuchuri/surya) OCR in 90+ languages
- [Texify](https://github.com/VikParuchuri/texify) OCR model that converts images or pdfs containing math into markdown and LaTeX
- [tokencost](https://github.com/AgentOps-AI/tokencost?tab=readme-ov-file) Token price estimates for 400+ LLMs
- [Reader API](https://jina.ai/reader/) API for LLMs to load from the web/read the web
- [LLM Compare](https://llmcompare.net/) Compare token price against LLM quality to find best bang for buck
- [supervision](https://github.com/roboflow/supervision) Open source computer vision tools
- [ImageBind](https://github.com/facebookresearch/ImageBind) One Embedding Space to Bind Them All
- [tarsier](https://github.com/reworkd/tarsier) Library to scrape webpages in formats that are easier for LLMs to interact with
- [Hugging Face Community Computer Vision Course](https://huggingface.co/learn/computer-vision-course/unit0/welcome/welcome) Free computer vision course
- [DeepLearning.AI: Start or Advance Your Career in AI](https://www.deeplearning.ai/)
- [Idefics2 🐶 - a HuggingFaceM4 Collection](https://huggingface.co/collections/HuggingFaceM4/idefics2-661d1971b7c50831dd3ce0fe) Visual model for image to json
- [Deep Reinforcement Learning: Zero to Hero!](https://github.com/alessiodm/drl-zh) Free deeplearning course
- [gpudeploy](https://www.gpudeploy.com/) Rent Idle GPUs for cheap
- [databonsai](https://github.com/databonsai/databonsai) Data cleaning / categorizing with LLM
- [LlamaIndex](https://www.llamaindex.ai/) RAG platform with a LOT of ready made plugins
- [wiedervereinigung](https://ollama.com/mayflowergmbh/wiedervereinigung) German ollama model for chat use case
- [mergekit](https://github.com/arcee-ai/mergekit)  Tools for merging pretrained large language models.
- [LLaMA-Factory](https://github.com/hiyouga/LLaMA-Factory) Easy fine-tuning for 100+ LLMs
- [LumiOpen (LumiOpen)](https://huggingface.co/LumiOpen) Europenan Foundation models trained by the university of turku (finnland)
- [LLaMa2lang](https://github.com/UnderstandLingBV/LLaMa2lang) Train foundation models for chat towards other languages apart from english
- [AutoGPTQ](https://github.com/AutoGPTQ/AutoGPTQ) A LLMs quantization package based on GPTQ algorithm.
- [MTEB Leaderboard](https://huggingface.co/spaces/mteb/leaderboard) Massive Text Embedding Benchmark to compare models for NLP tasks
- [Upscayl](https://www.upscayl.org/) Open-Source & Free AI image upscaler
- [OpenFace](https://cmusatyalab.github.io/openface/) Library to find face similiarity
- [deepface](https://pypi.org/project/deepface/) Deepface is a lightweight face recognition and facial attribute analysis (age, gender, emotion and race) framework
- [YOLOv8 Performance Improvement Masterclass | Udemy](https://www.udemy.com/course/yolo-performance-improvement-masterclass/?referralCode=A87DA906397E1027C6C5)
- [DeepSeek-VL](https://github.com/deepseek-ai/DeepSeek-VL) Multimodal vision understanding model
- [CVAT](https://www.cvat.ai/) Data annotation platform for finetunining on object detection
- [Iinsanely-fast-whisper](https://github.com/Vaibhavs10/insanely-fast-whisper) CLI tool to run whisper locally on your mac
- [Artbot](https://tinybots.net/artbot/) Free hosted stable diffusion to play around with
- [danswer](https://github.com/danswer-ai/danswer) Open source tool to build RAG for company internal tools. Already has quite a few integrations
- [Lexica](https://lexica.art/) Free prompt gallery to generate awesome images and copy over styles
- [Deep Learning Book](https://www.deeplearningbook.org/) Book to learn about deep learning
- [Prompting Guide](https://www.promptingguide.ai/) Guide on how to write prompts for LLMs
- [XTTS - a Hugging Face Space by coqui](https://huggingface.co/spaces/coqui/xtts) Model that allows you to clone a voice into any language. e.g. your german voice into english. Super fascinating and interesting for translating podcasts/youtube video automagically
- [EffiecientML](https://www.youtube.com/playlist?list=PL80kAHvQbh-pT4lCkDT53zT8DKmhE0idB) Free MIT lecture on how to get deeplearning models smaller and faster (to run them on local devices)
- [One machine learning question every day - bnomial](https://today.bnomial.com/) Get a machine learning question every day. Helps you to continue learning
- [Making Deep Learning Go Brrrr From First Principles](https://horace.io/brrr_intro.html) Cute explanation of how to speed up your deep learning process, or actually, explaining what makes it slow
- [PySceneDetect](https://www.scenedetect.com/) Python library to detect scene changes in videos
- Vectors
   - [fast_vector_similarity](https://github.com/Dicklesworthstone/fast_vector_similarity) RUST lib to calculate distance between vectors
- [Learning Prompt](https://learningprompt.wiki/) Free prompt engineering guide
- [AI Grants Finder](https://grantsfinder.portkey.ai/) Site to find grants for your AI projects
- [LangChain](https://python.langchain.com/en/latest/index.html) LangChain to combine multiple AI APIs together
- [Splink](https://github.com/moj-analytical-services/splink) Python library to link somewhat alike data points to each other
- [LLama from scratch](https://blog.briankitano.com/llama-from-scratch/) Blogpost on how to build llama in a tiny version for yourself
- [5 learnings from classifying 500k customer messages with LLMs vs traditional ML](https://www.trygloo.com/blog/classify-text-llms-learnings)
- [Tech your LLM Vector SQL](https://blog.myscale.com/2023/07/17/teach-your-llm-vector-sql/) A way on how to force a LLM to answer with facts, and prevent halluzination.
- [Andrej Karpathy](https://www.youtube.com/c/AndrejKarpathy) YouTube channel for learning about AI
- [What is ChatGPT doing and why does it work?](https://writings.stephenwolfram.com/2023/02/what-is-chatgpt-doing-and-why-does-it-work/) Amazing post by the wolfram alpha guy about how ChatGPT works
- AI Prompts
   - [OpenAI Cookbook](https://github.com/openai/openai-cookbook) Documentation by OpenAI on how to use ChatGPT better
   - [DALL-E 2 Prompt Book](http://dallery.gallery/wp-content/uploads/2022/07/The-DALL%C2%B7E-2-prompt-book-v1.02.pdf) In-depth PDF book on how to craft prompts for DALL-E 2
   - [Promptbase](https://promptbase.com/) Gallery of prompts for major AI APIs
   - [Prompthero](https://prompthero.com/) Another gallery of prompts for major AI APIs
   - [Promptbetter](https://promptbetter.ai) Tool to A/B test your prompts in production
- [Machine Learning introduction course](https://www.coursera.org/specializations/machine-learning-introduction)
- [FastAI Course](https://course.fast.ai/) The best known course for starting in the AI/deeplearning space
- [Open Source Vector database](https://github.com/milvus-io/milvus) Vector database written in Golang
- [Making Friends with Machine Learning](https://www.youtube.com/watch?v=lKXv19eRLZg&list=PLRKtJ4IpxJpDxl0NTvNYQWKCYzHNuy2xG&index=1) Amazing learning series by google about machine learning concepts. High-level, but great to get started
- [EleutherAI](https://www.eleuther.ai/) A collective of researching working on Open AI tech
- Prompts
   - [Prompt Engineering Guide](https://github.com/dair-ai/Prompt-Engineering-Guide) GitHub repo with list of prompts for widely used AI products

Communities

- [Scraping Chat](https://github.com/berstend/puppeteer-extra/wiki/Scraping-Chat#) Community for exchange around the topic of web scraping

Videos

- [Hamel Husain](https://www.youtube.com/@hamelhusain7140) Machine-learning YouTube Channel, with nice niche interviews
- [Deep Dive into LLMs like ChatGPT - YouTube](https://www.youtube.com/watch?v=7xTGNNLPyMI)
[https://youtu.be/7xTGNNLPyMI](https://youtu.be/7xTGNNLPyMI)
- [VidiQ](https://vidiq.com/extension/) YouTube research tool
- [Thumbnail Test](https://thumbnailtest.com/) Tool to A/B your youtube thumbnails, simple but effective
- [How to send a self-correcting message-Hamming codes](https://www.youtube.com/watch?v=X8jsijhllIA) This video made me understand how you can detect and fix bit-flip errors in electrical engineering with Hamming codes. Great teacher.

Health

- [colmi](https://tahnok.github.io/colmi_r02_client/colmi_r02_client.html) Programming library to interact with open source smartring
- [Examine](https://examine.com/) Website which sells nutrition information. As their business model does not depend on ads, this can be more trusted than other sites on the internet

Psychology

- [Drive and Listen](https://driveandlisten.herokuapp.com/) What an internet gem. A page where you see youtube videos of cars driving and the according web radio to it. Super relaxing (at least for me)
- Personality tests
   - [PrinciplesYou](https://principlesyou.com/) Personality check by Ray Dalio
   - [16 Personalities](https://www.16personalities.com)

Reads

- [Lyme Disease Keto Diet](https://tim.blog/2026/01/30/lyme-disease-ketogenic-diet/) Tim Ferris preaching again about Keto diet. Nice read
- [The Tail end](https://waitbutwhy.com/2015/12/the-tail-end.html) Nice visualization on how short life is. Memento mori
- [Almost anything you give sustained attention to will begin to loop on itself and bloom](https://www.henrikkarlsson.xyz/p/attention)
- [Seriously bright light vs. winter blahs](https://meaningness.com/sad-light-lumens) Get bright lights in the winter to not get sad
- [HMRC data debunks UK non-dom exodus claims](https://taxjustice.net/press/hmrc-data-debunks-uk-non-dom-exodus-claims-ft-reports/) Apparently raising taxes does not make a lot of rich people flee a country
- [Killing Mosquitoes With Freaking Drones, And Sonar](https://hackaday.com/2025/03/25/supercon-2024-killing-mosquitoes-with-freaking-drones-and-sonar/)
- [On The Death of Daydreaming](https://www.afterbabel.com/p/on-the-death-of-daydreaming) Essay on daydreaming
- [How a straight line teaches machines to learn](https://briefer.cloud/blog/posts/least-squares/) A nice article on how gradient descent works
- [America Is Missing The New Labor Economy – Robotics Part 1 – SemiAnalysis](https://semianalysis.com/2025/03/11/america-is-missing-the-new-labor-economy-robotics-part-1/)
- [Building and operating a pretty big storage system called S3 | All Things Distributed](https://www.allthingsdistributed.com/2023/07/building-and-operating-a-pretty-big-storage-system.html)
- [A Guide to Large Language Model Abstractions - Two Sigma](https://www.twosigma.com/articles/a-guide-to-large-language-model-abstractions/)
- [13 questions that will change your life](https://shaan.beehiiv.com/p/one-minute-blog-13-questions-that-will-change-your-life)
- [What is HDR, anyway?](https://www.lux.camera/what-is-hdr/) Really great article on what HDR (for photos) actually means.
- [How Network Address Translator (NAT) works](https://tailscale.com/blog/how-nat-traversal-works) Amazing long-form blogpost by tailscale about the tricks to get through a NAT (carrier grades included)
- [Exploring LoRA: The Idea Behind Parameter Efficient Fine-Tuning and LoRA](https://medium.com/inspiredbrilliance/exploring-lora-part-1-the-idea-behind-parameter-efficient-fine-tuning-and-lora-ec469d176c26)
- [Finally, a Replacement for BERT: Introducing ModernBERT](https://huggingface.co/blog/modernbert)
- [Late Chunking: Balancing Precision and Cost in Long Context Retrieval](https://weaviate.io/blog/late-chunking) Nice read on how to get more document level context into a single embedding vector
- [Four Thieves Vinegar](https://fourthievesvinegar.org/) Collective that tries to build own medicine. I mean it's crazy, proppably illegal and might be harmful to your body, but it is damn interesting nevertheless
- [RAG Evaluation Tutorial](https://huggingface.co/learn/cookbook/rag_evaluation) Hugging Face tutorial on how to build a RAG evaluation pipeline
- [Just Use Postgres for Everything](https://www.amazingcto.com/postgres-for-everything/)
- [Management Time: Who’s Got the Monkey?](https://hbr.org/1999/11/management-time-whos-got-the-monkey)
- [Anti-hype LLM reading list](https://gist.github.com/veekaybee/be375ab33085102f9027853128dc5f0e)
- https://benhoyt.com/writings/go-1brc/
- [CFO Secrets](https://www.cfosecrets.io/) Super interesting reads about CFO topics (M&A, etc.). Especially for me as tech nerd
- [Brr](https://brr.fyi/) Blog about life on a north-pole research station
- [Nobody optimizes happiness](https://dynomight.net/happiness/) Article about happiness in life
- [Longreads](https://longreads.com/) Longform articles
- [The Electric Typewriter](https://tetw.org/) Great articles and essays by the world's best journalists and writers.
- [Quarks Daily](https://3quarksdaily.com/) Curated list of longform articles
- [Derek Sivers Blog](https://sive.rs/blog) Great writer with interesting articels with topics across the board
- [Read something great](https://www.readsomethinggreat.com/) Timeless articles from the belly of the internet
- [Zero to nix](https://zero-to-nix.com/) Guide on how to use the nix package manager
- [Mechanical Watch article](https://ciechanow.ski/mechanical-watch/) This is by far the best explanation on how mechnical watches work I've ever seen. So much great visuals and animations in there to clarify things
- [Debugging Certificate Errors](https://www.netmeister.org/blog/debugging-certificate-errors.html) Noice little guide on how to debug errors with your SSL certs
- [Travel is no cure for the mind](https://moretothat.com/travel-is-no-cure-for-the-mind/) Visual adaption of a Seneca letter. Stoic ideas about the pleasure trap
- [Why don't Rocket Engines don't melt](https://everydayastronaut.com/engine-cooling-methodes/) Great youtube video + article on how rocket engines get cooled
- [GPS](https://ciechanow.ski/gps/) A beautifully illustrated article about how GPS works. If you want't to understand how your smartphone knows where you are, you HAVE to read this.
- [Cgroup throttling](https://danluu.com/cgroup-throttling/)
- Leadership
   - [The Art of Scaling People](https://www.slideshare.net/endymi0n/the-art-of-scaling-people-english-short)
- [List of friction hitch knots](https://en.m.wikipedia.org/wiki/List_of_friction_hitch_knots) A friction hitch is a kind of knot used to attach one rope to another in a way that is easily adjusted.
- [Becoming A Whorelord: The Overly Analytical Guide To Escorting](https://knowingless.com/2021/10/19/becoming-a-whorelord-the-overly-analytical-guide-to-escorting/) Like I am not saying you need to know this, but it is damn interesting in-depth guide on how this woman did organize her sex work. Found this on my "to read" list, no clue where I picked that one up. (HackerNews maybe?)
- [Networks from scratch](https://www.networksfromscratch.com/1.html) Ebook about networks. Has nice illustrations
- [HackerNews Readings](https://hacker-recommended-books.vercel.app/) App that parses hacker news for book recommendations
- Design
   - [Responsive Images 101](https://cloudfour.com/thinks/responsive-images-101-definitions/) Blog post series on how to handle responsive images on your site
   - [Designing forms for gender diversity and inclusion
](https://uxdesign.cc/designing-forms-for-gender-diversity-and-inclusion-d8194cf1f51)
   - [What I learnt roasting 200 landing pages in 12 months ](https://blog.roastmylandingpage.com/landing-page-roasts/) Article about common errors in landingpages
   - [Responsive layout grid](https://material.io/design/layout/responsive-layout-grid.html) Ensure consistent column layout
   - [7 practical tips for cheating at design](https://medium.com/refactoring-ui/7-practical-tips-for-cheating-at-design-40c736799886)
   - [Redesigning laravel.io](https://medium.com/refactoring-ui/redesigning-laravel-io-c47ac495dff0)
- Security
   - [How to Design a Scalable Rate Limiting Algorithm](https://konghq.com/blog/how-to-design-a-scalable-rate-limiting-algorithm) Quite nice read about different rate-limiting algorithms
   - [Email Authenticity 101: DKIM, DMARC, and SPF
](https://www.alexblackie.com/articles/email-authenticity-dkim-spf-dmarc/)
   - [My First 5 Minutes On A Server; Or, Essential Security for Linux Servers
](https://sollove.com/2013/03/03/my-first-5-minutes-on-a-server-or-essential-security-for-linux-servers/)
   - [Hacker's guide to deep-learning side-channel attacks](https://elie.net/blog/security/hacker-guide-to-deep-learning-side-channel-attacks-code-walkthrough/)
- Math
   - [Poisson's Equation is the Most Powerful Tool not yet in your Toolbox
](https://mattferraro.dev/posts/poissons-equation)
- Coding
   - [Challenging algorithms](https://austinhenley.com/blog/challengingalgorithms.html) Challenging CS algorithms and data structures every programmer should try
   - [LoRa tutorial](https://os.mbed.com/docs/mbed-os/v6.15/apis/LoRa-tutorial.html) Build your own LoRA network from scratch
   - [Chessengines.org](https://www.chessengines.org/) Really nice 0-1 guide on how to build a chess engine
   - [Server Sent Events vs. Websockets](https://germano.dev/sse-websockets/) There is something called server sent events (did not know about it) in the HTTP standard. Allows you to send events from your server to your frontend via a long-lived http connection. Quite nice to build hacky two-way communication. Article goes into detail how it compares to Web Sockets
   - [Zero downtime API in Golang](https://wutch.medium.com/zero-downtime-api-in-golang-d5b6a52cc0ed) Explaining how to spawn a new go process which can directly start taking new connections, so your API has zero downtime. Quite niche scenario, but two really interesting approaches to solve it.
   - [Introdcution to bpftrace](https://www.brendangregg.com/blog/2019-08-19/bpftrace.html) A short blogpost about bfftrace a linux tracer for analyzing performance of running software
   - [How to insert 100M rows into sqlite in 33 seconds](https://avi.im/blag/2021/fast-sqlite-inserts/)
   - [Extreme HTTP Performance Tuning: 1.2M API req/s on a 4 vCPU EC2 Instance](https://talawah.io/blog/extreme-http-performance-tuning-one-point-two-million/) Nice blogpost about how to optimize network code on Linux
   - [Developing apps for iOS](https://cs193p.sites.stanford.edu/) Free stanford online course on how to develop in SwiftUI
   - [Alogrithms by Jeff Erickson](http://jeffe.cs.illinois.edu/teaching/algorithms/) Free ebook by Jeff Erickson on different useful algorithms
   - [Guide to Compression](https://go-compression.github.io/)
   - [Build your own X](https://github.com/danistefanovic/build-your-own-x)
   - [Learn the syntax basics of a new language](https://learnxinyminutes.com/)
   - [Top 5 courses to learn flutter](https://dev.to/javinpaul/top-5-courses-to-learn-flutter-and-dart-in-2020-3bkm)
   - [How Not To Sort By Average Rating](https://www.evanmiller.org/how-not-to-sort-by-average-rating.html)
   - Golang
      - [Graceful shutdown with Go http servers and Kubernetes rolling updates](https://medium.com/over-engineering/graceful-shutdown-with-go-http-servers-and-kubernetes-rolling-updates-6697e7db17cf) Nice read on how to properly shut down go http servers in k8s
      - [Common anit-pattern in go web applications](https://threedots.tech/post/common-anti-patterns-in-go-web-applications/) Nice read about what to avoid during architecting your go webapp
      - [There Are Many Ways To Safely Count
](https://brunocalza.me/there-are-many-ways-to-safely-count/)
      - [Write a time-series database engine from scratch
](https://nakabonne.dev/posts/write-tsdb-from-scratch/)
      - [Please, don't use equality operator when comparing password hashes
](https://nowhereref.com/posts/please-dont-use-equal-operator-when-comparing-password-hashes/)
      - [High Performance Go Workshop
](https://dave.cheney.net/high-performance-go-workshop/dotgo-paris.html)
      - [Graceful Shutdowns in Golang with signal.NotifyContext
](https://millhouse.dev/posts/graceful-shutdowns-in-golang-with-signal-notify-context)
      - [Comprehensive Guide to Dates and Times in Go](https://qvault.io/golang/golang-date-time/)
      - [Autogenerate social media images in golang](https://pace.dev/blog/2020/03/02/dynamically-generate-social-images-in-golang-by-mat-ryer.html) How you can generate images with golang
      - [What are vanity import paths](https://sagikazarmark.hu/blog/vanity-import-paths-in-go/)
      - [High Performance Go Workshop](https://dave.cheney.net/high-performance-go-workshop/gophercon-2019.html)
      - [Practical Go](https://dave.cheney.net/practical-go)
   - Webdev
      - [web.dev](https://web.dev/blog/) Google blog covering a lot of different interesting web topics
- Data
   - [Our World In Data](https://ourworldindata.org/)
   - [Visual Capitalism](https://www.visualcapitalist.com/)
- Society
   - [The Insecurity Industry](https://edwardsnowden.substack.com/p/ns-oh-god-how-is-this-legal) Blog post by Edward Snowden about the systematical problem of the cyber "security" sector
   - [This open-source program lets you run deepfakes on live video calls](https://www.inputmag.com/tech/open-source-program-will-let-you-run-deepfakes-on-live-video-calls)
   - [Naval](https://nav.al/)
   - [Riot Medicine](https://riotmedicine.net/static/downloads/riot-medicine.pdf)
- Hardware
   - [Open Source $30 Wind Turbine](http://opensourcelowtech.org/wind_turbine.html)
- SRE
   - [What is ebpf](https://sysadvent.blogspot.com/2021/12/day-23-what-is-ebpf.html)
   - [Less known PostgreSQL features](https://hakibenita.com/postgresql-unknown-features#grant-permissions-on-specific-columns) Great article on different tricks PostgreSQL has up its sleeve that you might not know about. My favorite: Column specify permissions
   - [What's in a hostname?](https://www.netmeister.org/blog/hostnames.html) Article about how a hostname regex looks. Guess what, a lot more complicated that you would think
   - [Tools to took at BGP](https://jvns.ca/blog/2021/10/05/tools-to-look-at-bgp-routes/) Quite nice read on how you as a dev can play around with BGP
   - [SRE deep dive into Linux Page Cache](https://biriukov.dev/docs/page-cache/0-linux-page-cache-for-sre/)
   - [How to Build Software like an SRE](https://www.willett.io/posts/precepts/)
   - [Let's make faster GitLab CI/CD pipelines
](https://blog.nimbleways.com/let-s-make-faster-gitlab-ci-cd-pipelines/) Struggling with this quite a lot. Nice ideas in this article
   - [My prometheus is overwhelmed](https://hackernoon.com/my-prometheus-is-overwhelmed-help-qi1937xj) Nice read about how to contain your prometheus and what to do if it is overwhelmed and chrashing
   - [5 Lessons Learned From Writing Over 300,000 Lines of Infrastructure Code](https://www.hashicorp.com/resources/lessons-learned-300000-lines-code)
   - [How Netflix uses eBPF flow logs at scale for network insight](https://netflixtechblog.com/how-netflix-uses-ebpf-flow-logs-at-scale-for-network-insight-e3ea997dca96)
   - [Monitoring and Tuning the Linux Networking Stack](https://blog.packagecloud.io/eng/2016/06/22/monitoring-tuning-linux-networking-stack-receiving-data/)
   - [Devops Games](https://opsdrill.com/blog/games-devops-teams-play-to-stay-sharp/) Play games to stay sharp and engaged as DevOps team
   - [Out of this world lessons from the Apollo Lunar landings](https://medium.com/ibm-garage/out-of-this-world-lessons-from-the-apollo-lunar-landings-part-i-703ff4f872ce) Awesome article series about the tech involved in the moon landing
   - [SRE Books](https://sre.google/books/) Get started in the SRE methodology
- Entrepreneurship
   - [Do you feel pressure or do you apply pressure](https://a16z.com/2014/07/15/do-you-feel-pressure-or-do-you-apply-pressure-2/) Blogpost by andreesen on that you as a CEO either have to feel the pressure or apply it down your chain
   - [Betting on things to not change](https://collabfund.com/blog/betting-on-things-that-never-change/) Story about how amazon bets on things that won't change to make its fortune
   - [Why are you doing this?](https://justinjackson.ca/personal) Justin Jackson writing about why he ventured into Entrepreneurship and why it is super important to keep in mind why you are doing it.
   - [How To Find SaaS Ideas](https://tomzaragoza.com/how-to-find-saas-ideas/) Nice writeup about different ways to find your next SaaS idea
   - [Kickstart and Scale a Marketplace Business](https://www.lennysnewsletter.com/p/how-to-kickstart-and-scale-a-marketplace) Extensive post series about the starting phase in several market place businesses
   - [Netflix cultur presenation](https://www.slideshare.net/reed2001/culture-1798664) Netflix presenting its core company values
- Career
   - [The Ultimate Guide to Onboarding Software Engineers
](https://leadership.garden/onboarding-engineers/)
   - [The Ultimate Guide to Onboarding New Developers: Industry Best Practices and How to Plan the First 90 Days](https://codesubmit.io/blog/guide-to-onboarding-developers/)
   - [The Engineer’s Guide to Career Growth](https://review.firstround.com/the-engineers-guide-to-career-growth-advice-from-my-time-at-stripe-and-facebook) An engineer giving insights how she handled the path into management
- Weekend project
   - [Writing a document database from scratch in Go: Lucene-like filters and indexes
](https://notes.eatonphil.com/documentdb.html)
   - [Build your own DNS root](https://scholz.ruhr/post/alternative-dns-root/)
   - [Building a kubernetes operator](https://betterprogramming.pub/building-a-highly-available-kubernetes-operator-using-golang-fe4a44c395c2) Blogpost on how to code your own k8s operator
   - [Let's build a Full-Text Search engine](https://artem.krylysov.com/blog/2020/07/28/lets-build-a-full-text-search-engine/) Blogpost on how to build a fulltext search engine in go
   - [Start Your Own ISP](https://startyourownisp.com/) Guide on how to start your own ISP (in the US)
   - [Build your own ngrok](https://progrium.medium.com/building-your-own-ngrok-in-130-lines-627c2aaa6247)

Automation

- [Outline](https://www.getoutline.com/) Notion alternative, that is a lot cheaper, and can be self-hosten
- [imgproxy](https://imgproxy.net/) Convert images on the fly
- [BrowserStack](https://www.browserstack.com/) Automated testing of your webapp on multiple devices and browsers
- [Appium](http://appium.io/) Test automation framework for web and mobile apps
- [n8n](https://n8n.io) Open source automation software
- [Talkwalker](https://www.talkwalker.com/alerts) Create alerts for your keyword/product being mentioned on the web
- [Integromat](https://integromat.com)
*Their nice graphical interface and their higher free plan caught me*

Browser Plugins

- [Keywords everywhere](https://keywordseverywhere.com/) Keyword research on the go
- [Surfer SEO](https://surferseo.com/keyword-surfer-extension/) Chrome Extension for Content and Keyword Research
- Privacy
   - [Link Unshortener](https://unshort.link)
   - [Privacy badger](https://addons.mozilla.org/en-US/firefox/addon/privacy-badger17/)
   - [Ublock origin](https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/)
- Productivity
   - [Time tracking tool waywo](https://byrly.com/waywo/)

CMS

- [ScormHero](https://scormhero.com/) Convert PowerPoint or Video to the SCORM format for elearning
- [Simple json cms](https://simplejsoncms.com/) Free Headless CMS to JSOn documents
- [Vapid](https://www.vapid.com/) Static site generator with automatic dashboard

Presentations

- Slides
   - [Marp](https://marp.app/) Markdown to slidehshow

Newsletters I am subscribed to

- [DevOps Newsletters](https://devopsnewsletters.com/) I am subscibed to a bunch of newsletters in this nice list
- [Golang Weekly](https://golangweekly.com/)

Data science

- [graphic-walker](https://github.com/Kanaries/graphic-walker) Data visualization framework (framed as opensource tableu alternative, which I find a little far-fetched)
- [Neural Nets interactive explnation](https://aegeorge42.github.io/) Really nice visual explanation on how neural nets work
- [Open Meteo](https://open-meteo.com/en/docs) Free weather API to build your own apps build on top of weather data
- [Kaggle](https://www.kaggle.com/learn/overview) Free courses about different data science topics

Coding

- [lazygit](https://github.com/jesseduffield/lazygit) Quite popular terminal UI for common git commands
- [LibreTranslate](https://github.com/LibreTranslate/LibreTranslate) Free and Open Source Machine Translation API. Self-hosted, offline capable and easy to setup
- [Recall.ai - The Universal API for Meeting Bots](https://www.recall.ai/) Send AI bot into meeting, can output audio. Easy SaaS in comparioson to building this fuu for all platforms. Kinda sucks that they have a "talk for price", so no clue how expensive they are
- [Versatiles](https://versatiles.org/) OpenStreeMap tile genarator (open source)
- [Ironcalc](https://github.com/ironcalc/ironcalc) OpenSource spreadsheet engine
- [DuckDB](https://duckdb.org/) In-memory OLAP database
- [Google Books API](https://www.googleapis.com/books/v1/volumes?q=isbn:3833879629) ISBN based API for book data
- [Speculation Rules API](https://developer.mozilla.org/en-US/docs/Web/API/Speculation_Rules_API#browser_compatibility) API to tell browser which sites to prerender. This helps for faster pageload times
- [InstantClick](http://instantclick.io/) JS library to make your website appear instant
- [NIC root zone file](http://www.internic.net/domain/root.zone) Lists all possible top level domains
- [Zonefiles](https://zonefiles.io/) A list of all (globally) active domains. Decent price
- [SQL join flavors](https://antonz.org/sql-join/) Nice explainer how different SQL joins work
- [VHS](https://github.com/charmbracelet/vhs) Tool to record cli tool demos
- [ClearTalk Anti-Spam filter API](https://cleantalk.org/help/api-check-message) API to check messages/comments from your service against if they are spam
- [jsonnet course](https://jsonnet-libs.github.io/jsonnet-training-course/) Learn to use jsonnet
- [2Captcha](https://2captcha.com/) Captcha bypassing service if you got to scrape the web
- [CS 168: The Modern Algorithmic Toolbox](https://web.stanford.edu/class/cs168/index.html) Stanford CS 168 basis course
- [Build your own X](https://github.com/codecrafters-io/build-your-own-x) Collection of articles for nice programming projects. Learn how to programming X in your favorite language (e.g. a fulltext search)
- [Music For Programming](https://musicforprogramming.net/latest/) Online radio for programmer music
- [Auto animate](https://github.com/formkit/auto-animate) auto animate tool for easy JS animations
- [Daylight](https://daylightmap.org/) Open Source map data. Basically an enhanced OSM dataset
- [HAR to Swagger](https://github.com/alufers/mitmproxy2swagger) Neat little tool that converts a HAR export to swagger doc. Basically means you can surf a website and get a API documentation afterwards for it
- [Fuite](https://github.com/nolanlawson/fuite) Tool to find memory leaks in JavaScript web apps
- [Litestream](https://litestream.io/) Neat tool to online stream sqlite database to any S3 kinda storage. Allows you to build your entire infra on sqlite, with capping one downside of it
- [ScrapingBee](https://www.scrapingbee.com/) API service for webscraping. Offers headless browsers and rotating proxies to not get you blocked
- [Avoiding bot detection: How to scrape the web without getting blocked?](https://github.com/niespodd/browser-fingerprinting) GitHub Readme (apparently blogs are not cool anymore) explaining several different techniques on how to avoid being blocked by scraping protection
- [BSON](https://bsonspec.org/) Binary JSON Spec. Used by MongoDB. Kinda neat as it has super little spec surface and you can implement it yourself.
- [goplay.tool](https://goplay.tools/) Go playground with autocompletion
- [GoBGP](https://github.com/osrg/gobgp) BGP implemented in golang
- [Circuit breaker design pattern
](https://en.wikipedia.org/wiki/Circuit_breaker_design_pattern) Design pattern for detecting failure and adapting your system to it
- [Hoppscotch](https://github.com/Hoppscotch/Hoppscotch) API test client (postman alternative)
- [Livekit](https://livekit.io/) Open Source Video Chat solution
- [Insomnia](https://insomnia.rest/) REST, SOAP, GraphQL & GRPC GUI
- [Deps.dev](https://deps.dev/) Analyse the dependecies of your projects for healthyness
- [List of resources for webdesigners](https://toolkit.addy.codes/)
- [CSS flexbox masonry](https://codepen.io/tobiasahlin/pen/OGBvqW) CSS only masonry layout with using flexbox
- Rust
   - [Whatlang](https://whatlang.org/) Natural language detection library for Rust.
- [immudb](https://docs.immudb.io/master/) Immutable database
- Litestream
   - [Using litestream for LogReplication](https://mtlynch.io/litestream/) Nice blogpost about someone used litestream for his LogPaste tool
   - [Liststream s6 example](https://github.com/benbjohnson/litestream-s6-example) How to run a Go application with litestream in one Docker container
   - [Litestream](https://litestream.io/) Stream replication for SQLite, this is a game changer for how I develop my products
- [Swimlanes](https://swimlanes.io/) Online tool for creating sequence diagrams
- [Semgrep](https://semgrep.dev/) Highly configurable static analysis tool
- [Project Lovelace](https://projectlovelace.net/problems/) Website with scientific coding challenges to train
- [Seastar](http://seastar.io/) High performance framework used in scylladb
- Git
   - [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/) A specification for adding human and machine readable meaning to commit messages
   - [Oh my Git](https://ohmygit.org/) An open source game about learning Git!
- [Fundamentals of CS Algorithms](https://www.geeksforgeeks.org/fundamentals-of-algorithms/) Nice overview of interesting algorithms you as a programmer should know baout
   - [go-vcr](https://github.com/dnaeon/go-vcr) Record your HTTP interactions and replaying them in future runs
- [Wombat](https://github.com/rogchap/wombat) Cross platform gRPC client
- [Mastery Games](https://mastery.games/) Online learning games to sharpen your frontend skills e.g. flexbox zombies teaches flexbox skills
- [free-for.dev](https://free-for.dev) Free software useful for developers
- [r2c](https://r2c.dev/) Open Source static analytics tool with integrations for github, gitlab, etc.
- [Pinterest Engineering](https://medium.com/pinterest-engineering) Awesome articles pinterest shares
- Application design
   - [12factor](https://12factor.net) Principles for developing SaaS
- [Supabase](https://supabase.io/) Open source firebase alternative running on postgres
- [Falsehoods](https://github.com/kdeldycke/awesome-falsehood) Falsehood programmer believes
- [sonarqube](https://www.sonarqube.org/) Static code analyser
- Message Queues
   - [ØMQ Guide](https://zguide.zeromq.org/)
- Rust
   - [A half-hour to learn Rust](https://fasterthanli.me/articles/a-half-hour-to-learn-rust)
- Golang
   - [govulncheck](https://go.dev/doc/tutorial/govulncheck) Find and fix vulnerable dependencies with govulncheck
   - [Go Vulnerability Github Action](https://github.com/imjasonh/govulncheck-action) Automatically run govulncheck in github actions
   - [vuln](https://pkg.go.dev/golang.org/x/vuln#section-readme) Golang vulnarability checker
   - [Capslock](https://github.com/google/capslock) Capability analysis CLI for Go packages
   - [An implementation of Shazam's song matching algorithm.](https://github.com/cgzirim/not-shazam)
   - [Capslock](https://github.com/google/capslock) Golang static security linter tool, to figure out what high-privileged operations your used go packages do. Wants to help prevent supply chain attacks
   - [compress](https://github.com/klauspost/compress)  Optimized Go Compression Packages
   - [Rust plus golang](https://github.com/mediremi/rust-plus-golang) How to call rust functions from golang
   - [Dumpster diving the Go garbage collector](https://blog.px.dev/go-garbage-collector/) Deep-dive on the golang garbage collector
   - [Darker Corners of Go](https://rytisbiel.com/2021/03/06/darker-corners-of-go/) Nice little article about a few tiny nitpicks with golang
   - [High Performance Go Workshop](https://dave.cheney.net/high-performance-go-workshop/dotgo-paris.html) THE workshop if you want to write high-performance golang code. It is free and by the great Dave Cheney
   - [Gorse](https://gorse.io/) Go-based recommendation system
   - [The Busy Developer's Guide to Go Profiling, Tracing and Observability](https://github.com/DataDog/go-profiler-notes/blob/main/guide/README.md)
   - [Resources to learn go](https://github.com/ardanlabs/gotraining/tree/master/reading)
   - [go recipes](https://github.com/nikolaydubina/go-recipes) Handy commands to run in Go projects
   - [conprof](https://github.com/conprof/conprof) Continuous profiling for go programs
   - Videos
      - [Building Tamper-Proof Systems with ImmuDB and Go!](https://www.youtube.com/watch?v=01_wEMdOp1U)
   - Libraries
      - [HTML-to-markdown](https://github.com/JohannesKaufmann/html-to-markdown) Golang tool to convert html to markdown (neat for llm website usecases)
      - [html-distance](https://github.com/yahoo/gryffin/tree/master/html-distance) A go library for computing the proximity of the HTML pages. The implementation similiarity fingerprint is Charikar's simhash.
      - [transform package](https://cs.opensource.google/go/x/text/+/master:transform/examples_test.go) An easy to use package which transforms text on the fly (did write smth like this a few times, but easier to get it from x)
      - [gocv](https://github.com/hybridgroup/gocv) Golang OpenCV bindings
      - [Rav1e](https://github.com/xiph/rav1e) AVIF library for golang
      - [TypeID](https://github.com/jetpack-io/typeid) Typesafe UUID alternative
      - [go fed](https://go-fed.org/) Golang library to interact with the fediverse
      - [JWT Middleware](https://github.com/auth0/go-jwt-middleware) Golang middleware to check and validate JWTs in the request and add the valid token contents to the request context.
      - [fsnotify](https://github.com/fsnotify/fsnotify) Golang library to create desktop notifications on whatever OS you are on
      - [geodist](https://github.com/jftuga/geodist) GoLang package to compute the distance between two geographic latitude, longitude coordinates
      - [go-pst](https://github.com/mooijtech/go-pst) Library to read pst (Outlook email folder) files
      - [GoKart](https://github.com/praetorian-inc/gokart) Go security static checker that aims to be better than gosec
      - [Colly](http://go-colly.org/) Web scarping framwork
      - [Gorse](https://gorse.io/) Recommendation system
      - [Certmagic](https://github.com/caddyserver/certmagic) Automatic https for all go programs via Let's Encrypt
      - [bluemonday](https://github.com/microcosm-cc/bluemonday) HTML sanitizer
      - [Lingua](https://github.com/pemistahl/lingua-go) Detect the language of a text
      - [go-vcr](https://github.com/dnaeon/go-vcr) Record and replay your HTTP interactions
      - [Geziyor](https://github.com/geziyor/geziyor) Web crawling and web scraping framework
      - [ConnPool](https://github.com/buraksezer/connpool)  Thread safe connection pool for net.Conn interface
      - [Caire](https://github.com/esimov/caire) Content aware image resizing
      - [Bllom](https://github.com/bits-and-blooms/bloom) Go implementation of Bloom filters
      - [Ristretto](https://github.com/dgraph-io/ristretto)  A high performance memory-bound Go cache
      - [tunny](https://github.com/Jeffail/tunny) Lib for spawning a goroutine pool
      - [go-json](https://github.com/goccy/go-json) Faster json en/decoder compatible with encoding/json
      - [automaxprocs](https://github.com/uber-go/automaxprocs) Automatically set GOMAXPROCS to match Linux container CPU quota
      - [Awesome Go](https://awesome-go.com/) Huge list of nice go projects and libraries
      - [Ultimate Go](https://github.com/betty200744/ultimate-go) Notes on working with Go and computer systems
      - [Sprig](http://masterminds.github.io/sprig/) Useful template functions for Go templates
      - [go-string](https://github.com/boyter/go-string/) Faster string functions for go
      - [sqlc](https://github.com/kyleconroy/sqlc) Generate type-safe go code from sql. Never ever write database layers again :)
      - [Roaring Bitmaps](https://www.roaringbitmap.org/) Roaring bitmaps are compressed bitmaps. They can be hundreds of times faster.
      - [go-echarts](https://github.com/go-echarts/go-echarts) charts library for Golang
      - [kmeans](https://github.com/muesli/kmeans) k-means clustering algorithm
      - [dowork](https://git.sr.ht/~sircmpwn/dowork)  general purpose task queueing system for Go programs
      - [simple deflicker](https://github.com/StruffelProductions/simple-deflicker) ool for deflickering image sequences
      - [Kong](https://github.com/alecthomas/kong) Kong is a command-line parser for Go
      - [Context Aware Image Resizing](https://github.com/esimov/caire)
      - [Exponential backoff algorithm](https://github.com/cenkalti/backoff)
      - [Gradient Boosting Regression Trees implementation](https://github.com/dmitryikh/leaves)
      - [goswagger](https://goswagger.io/) golang implementation of Swagger 2.0
      - HTTP
         - [Bot detection for http request](https://github.com/zgoat/isbot)
         - [Get browser,OS and user agent from request](https://github.com/zgoat/gadget)
         - [Pretty Print HTTP Requests](https://github.com/henvic/httpretty)
         - [Lossy](https://github.com/cevatbarisyilmaz/lossy) Package to simulate bandwidth, latency and packet loss
      - [License checker](https://github.com/google/go-licenses)
      - [Redirect CGO stdout into buffer](https://github.com/eliben/code-for-blog/blob/master/2020/go-fake-stdio/snippets/redirect-cgo-stdout.go)
      - [Scraping framework](https://github.com/gocolly/colly)
   - Tools
      - [Godocs.org](https://godocs.io/) Get back the old godocs in case you (like me) hate pkg.go.dev
      - [Bbold](https://github.com/etcd-io/bbolt) Key/value store written in golang
      - [Go block profiler](https://github.com/felixge/go-profiler-notes/blob/main/block.md) Check how much time your go programm spends waiting on blocking operations (e.g. channel sends)
      - [Convert curl command to go request](https://curl.trillworks.com/)
      - [Convert json to go struct](https://mholt.github.io/json-to-go/)
      - [Online code playground: goplay.space](https://goplay.space/)
*A lot better than the original go playspace at it does automatic syntax highlighting and auto imports*
- Javascript
   - [OverType](https://overtype.dev/) Zero-dependency markdown editor
   - [Canvas Confetti](https://github.com/catdad/canvas-confetti) JavaScript Library to display confetti animation
   - [PWA Builder](https://www.pwabuilder.com/) Package progressive web apps for ios and android
   - [Beaconing in practice](https://nicj.net/beaconing-in-practice/) In-depth guide on how to use the browser `.sendBeacon()` API to send metrics data asynchronosly
   - [Partytown](https://github.com/builderio/partytown) JS library to move external scripts into a webworker to increase web performance
   - [Tone.js](https://tonejs.github.io/) JS lib for music apps in the browser
   - [How to Use IndexDB to Manage State in JavaScript
](https://blog.openreplay.com/how-to-use-indexdb-to-manage-state-in-javascript)
   - [base2048](https://github.com/qntm/base2048) A binary encoding optimised for transmitting data through Twitter
   - [FingerprintJS - Browser fingerprinting and fraud detection](https://fingerprintjs.com/open-source/)
   - [Transfer files via sound](https://quiet.github.io/quiet-js/)
   - [PubSub via local storage](https://simon-frey.com/tabsub/)
   - [MediaPipe](https://mediapipe.dev/)  Live ML anywhere
- Security
   - [List of possible naughty strings to test your text input parsing against](https://github.com/minimaxir/big-list-of-naughty-strings)
   - [Static analysis](https://www.sonarqube.org/)
- Tools
   - [openapi devetools](https://github.com/AndrewWalsh/openapi-devtools) Browserextension to automatically build openapi spec for the website you are using. (nice for building a web scraper)
   - [Slate](https://github.com/slatedocs/slate) API documentation generator tool. Nice looking multi row design
   - [Lookup http statuscodes](https://httpstatuses.com/)
   - [Online Regex checker](https://regex101.com/)

Design

- [Remotion](https://www.remotion.dev/) Make videos programmatically
- [It’s hard to justify Tahoe icons](https://tonsky.me/blog/tahoe-icons/) Nice little article on when to use icons in menues
- [Wireframe Sketcher](https://wireframesketcher.com/) One-time payment balsamiq cloud alternative
- [concrete.css](https://concrete.style/) A simple and to the point classless CSS stylesheet
- [LaTeX.css](https://latex.vercel.app/) Make your website look like a LaTeX document
- [daisyUI themes — Tailwind CSS Components](https://daisyui.com/docs/themes/) Nice component lib for tailwindcss
- [Rive](https://rive.app/) Cheap animation editor
- [Juice](https://garden.bradwoods.io/notes/design/juice) Guide on building nice to interact with interfaces
- [Driver.js](https://driverjs.com/) Webapp producttour javascript library
- [HTML5Up](https://html5up.net/) Free (CC-BY) html website templates
- [Transfonter](https://transfonter.org/) Generate perfect CSS code for all your font families
- [Absurd Design](https://absurd.design/) Illustrations for project in absurd style
- [Streamline](https://www.streamlinehq.com/) Illustrations library (paid)
- [Blush](https://blush.design/) Illustration marketplace
- [Creative Markter](https://creativemarket.com/) Design resources (payed)
- [RefactoringUI](https://www.refactoringui.com/book) Design book by the creators of TailwindCSS
- [Growth Design](https://growth.design/case-studies/) Growth & UX case studies in a comic book format
- [Generated Photos](https://generated.photos) AI generated human faces you can use for cheap in your projects
- [Avataaars](https://getavataaars.com/) Avatar vector generator
- Fonts
   - [The League of movable type](https://www.theleagueofmoveabletype.com/) Open source fonts
   - [Characters Per Line](https://pearsonified.com/characters-per-line/) Blog post about how much characters you should use per line to have a good readable site
   - [Atkinson Hyperlegible Font](https://www.brailleinstitute.org/freefont): A font with greater legibility and readability for low vision readers
   - [National Park Font](https://nationalparktypeface.com/) A typeface designed to mimic the national park service signs
   - [Atkinson Hyperlegible Font](https://www.brailleinstitute.org/freefont) A font specially designed for good readability, even for visual impared users
- Colors
   - [Coloors](https://coolors.co/) Color scheme generator
   - [Duo](https://duo.alexpate.uk/)
   - [Dutones](https://duotones.co/) Color images into duo colors
   - [Happy Hues](https://www.happyhues.co/) Curated color schemes
- CSS Frameworks
   - [Bulma](https://bulma.io/)
   - [TailwindCSS](https://tailwindcss.com/)
   - [BigHeads](https://bigheads.io/) big head avatar library (also react lib available)
- Icons
   - [Flaticon](https://flaticon.com)
   - [Streamline Icons](https://app.streamlineicons.com/)
- Illustrations
   - [StockSnap](https://stocksnap.com/) Search engine for CC0 images
   - [Shotsnapp](https://shotsnapp.com/) Device mockup generator
   - [carbon](https://carbon.now.sh/) Create nice images of your sourcecode. Great for social media
   - [Chart.js](https://www.chartjs.org/) Simple yet flexible JavaScript charting for designers & developers
   - [DrawKit](https://www.drawkit.io/) THE startup illustration library
*Could not not mention drawkit in this list. Don't use it myself as it is to omnipresent in the internet, but still an awesome library*
   - [Open Peeps](https://www.openpeeps.com/) A hand-drawn illustration library.
   - [Stubborn Characters](https://stubborn.fun/)
   - [Open Doodles](https://www.opendoodles.com/) Hand draw humans in action
   - [Blush](https://blush.design/)
   - [Ghost Vector Illustrations](https://pixelbuddha.net/freebie/free-ghost-vector-illustrations) Minimalistic graphic library
   - [unDraw](https://undraw.co/illustrations) Drawkit like illustrations
   - [Ouch](https://icons8.com/ouch)
   - [Many Pixels](https://www.manypixels.co/gallery/?color=fd8b68&page=1&style=isometric) 3D style illustrations
   - [Woosh](https://www.ls.graphics/whoosh)
   - [IRA Design](https://iradesign.io/gallery/illustrations)
   - [Humaans](https://www.humaaans.com/) Mix-match people design library
   - [Sketchvalley](https://sketchvalley.com/) Hand-drawn free vector illustration resources
   - [Fresh Folk](https://fresh-folk.com/) an illustration library of people and objects
   - [Smash illustrations](https://usesmash.com/) Changing and overlapping them, you can quickly illustrate an idea of your startup
- Snippets
   - [Nice delivery buttons](https://dev.to/saijogeorge/some-button-that-delivers-literally-9gb)
   - [Nodesign.dev](https://nodesign.dev/) Design tools for developers
   - [Rough.js](https://roughjs.com/) Create graphics with a hand-drawn, sketchy, appearance
- UX
   - [UXArchive](https://uxarchive.com/) Site showcasing mobile UX trends
   - [Dark Patterns](https://www.darkpatterns.org/types-of-dark-pattern)
   - [Mini UX Course](https://the-ux-mini-course.com/book/ch-1-prompt-for-action) Nice resource to start your UX journey with.
   - [User flows inspirations](https://pageflows.com/)

Art

- [MapFight](https://mapfight.xyz/map/de/) Funny little website, that compares different map sizes. E.g. how big is germany compared to other countries
- [prettymaps](https://github.com/marceloprates/prettymaps) Python library to create beatiful artsy maps for any address globaly via Open Street Maps
- [2,400 artists create unique renders from a simple promp](https://www.youtube.com/watch?v=ZkRjihsMdp8)
- Demoscene
   - [Tech yourself demoscene in 14 days](https://github.com/psenough/teach_yourself_demoscene_in_14_days) Demoscene is a quite weird but awesome digital art form. This guide teaches you how to get started with it

SRE

- [bunny.net](https://bunny.net/) european cloudflare alternative
- [Anubis](https://anubis.techaro.lol/) Self hostable proof of work scraper defense software
- [3FS](https://github.com/deepseek-ai/3FS) Fire-Flyer File System from DeepSeek
- [Kamal — Deploy web apps anywhere](https://kamal-deploy.org/) Docker based deploy automation by 37signals
- LLM Hosting
   - [litellm](https://github.com/BerriAI/litellm) Python SDK, Proxy Server (LLM Gateway) to call 100+ LLM APIs in OpenAI format
   - [openinference](https://github.com/Arize-ai/openinference) OpenTelemetry Instrumentation for AI Observability
   - [llama.cpp](https://github.com/ggerganov/llama.cpp/blob/master/examples/server/README.md) C-lib for running lama on mac
   - [vLLM](https://docs.vllm.ai/en/latest/) LLM Hosting framework
- [GPU Deploy](https://www.gpudeploy.com/) Rent idle CPUs from other companies
- [OAuth2 Proxy](https://oauth2-proxy.github.io/oauth2-proxy/) Proxy to secure your intranet behind it
- [Anakin](https://github.com/Timmmm/anakin)  Kill orphan child processes. Love the starwars pun
- [NVIDIA GPU metrics exporter for Prometheus leveraging DCGM](https://github.com/NVIDIA/dcgm-exporter) Kubernetes metrics exporter is based on this
- [disposable-email-domains](https://github.com/disposable-email-domains/disposable-email-domains) a list of disposable and temporary email address domains to block in your email forms and logins
- [Domain Monitor](https://domains-monitor.com/) List of all domains globally
- [ClickHouse](https://clickhouse.com/) OpenSource Data Warehouse (column database)
- [Google Cloud Compute Engine Machine Type Comparison](https://gcloud-compute.com/) Website with a nice overview table on different machine type pricings in google cloud
- [The Raft Consensus Algorithm](https://raft.github.io/) Great visual explainer on how the RAFT consensus mechanism works. If you develop distributed systems, check this one out
- [InfraCost](https://www.infracost.io/) Tool to show infra cost in GitHub MR. Great to detect increased potential cost
-  [K6](https://k6.io/) Open source load testing tool by grafana
- [Delivery Hero Reliability Manifesto](https://tech.deliveryhero.com/our-reliability-manifesto/) Manifest of the SRE team at Deliveryhero on how they operate. Kinda nice basis to copy to build your own one
- [Innernet](https://github.com/tonarino/innernet) Open-source tailscale configuration system. Somewhat like Tailscale but FOSS
- [tfsec](https://aquasecurity.github.io/tfsec/) Static security linter for terraform
- [Google Container Tools](https://github.com/GoogleContainerTools) Googles GitHub orgs with all lot. A LOT of great tools for working with containers
- [Index Advisor for Postgres](https://pganalyze.com/index-advisor) Tool to get recommendations on what indexes to configure in postgres in order to have more efficient queries
- [Keeping your domain name secure
](https://www.gov.uk/guidance/keeping-your-domain-name-secure) uk.gov guidance on how to keep you domain names secure
- [Victoria Metrics](https://victoriametrics.com/) Prometheus compatible monitoring stack
- Prometheus
   - [Bomb squad](https://github.com/open-fresh/bomb-squad)  Automatic detection and silencing of high cardinality series in Prometheus as k8s sidecar
   - [Find long running queries in postgres](https://til.codes/finding-long-running-sql-queries-in-postgresql/)
- [Grafonet](https://github.com/grafana/grafonnet-lib) Jsonnet lib for grafana dashboards
- [Sloth](https://github.com/slok/sloth) Create SLOs for prometheus
- [Boring Technology Club](http://boringtechnology.club/) Slides why you should choose boring technology
- [Litestream](https://litestream.io/) Streaming backup system for SQLite
- [Awesome SRE](https://github.com/dastergon/awesome-sre) List of nice resources for SREs
- [How they SRE](https://github.com/upgundecha/howtheysre)  A curated collection of publicly available resources on how technology and tech-savvy organizations around the world practice Site Reliability Engineering (SRE)
- [School of SRE](https://linkedin.github.io/school-of-sre/) Introduction into useful knowledge for SREs
- [Principles of chaos engineering](http://principlesofchaos.org/)

Music

- [Qirky/Troop: Real-time Live Coding collaboration app](https://github.com/Qirky/Troop) For Tidal (so for live-coding music)
- [List of Open Source Music Production Tools](https://midination.com/free-music-production-software/)
- [Vital](https://vital.audio/) Wave synth
- [Ardour](https://ardour.org/) Linux DAW
- [Unfa](https://www.youtube.com/c/unfa000/videos) Youtube channel teaching about music production with open source software

Digital Nomad

- [workfrom](https://workfrom.co/munich) Website to find good places to cowork all around the (western) globe
- [Cost of living calculator](https://gromov.com/cost-of-living-calc) Check how much you spend in different places around the globe
- [BridgeZero](https://bridgezero.com/) Ranking of world visa programs
- [Kiwix](https://www.kiwix.org/en/) Store wikipedia offline
- [nómades digitales](https://baglobal.buenosaires.gob.ar/EN/nomades-digitales.php) Buenos Aires digital nomad program

DevOps

- [DuckDB](https://duckdb.org/) Open source data warehouse database. Snowflake alternative
- [pg_bouncer](https://www.pgbouncer.org/) postgres connection pooling
-  [Pritunl](https://pritunl.com/) VPN solution based on wireguard, kinda open-source alertnative to tailscale
- [Cortex](https://cortexmetrics.io/) Thanos like long-term storage for prometheus
- [Uptime Kuma](https://github.com/louislam/uptime-kuma) Self-hosted uptime monitor
- [Spilo](https://github.com/zalando/spilo) HA PostreSQL cluster on docker
- [innernet](https://github.com/tonarino/innernet) A private network system that uses WireGuard under the hood
- [pgcenter](https://github.com/lesovsky/pgcenter) Inspect your postgres with a top like interface
- [pgsync](https://github.com/ankane/pgsync) Sync data from one Postgres database to another
- [crontab guru](https://crontab.guru/) Simple tool to check crontab schedule. I use that like a few times a week
- [Flagsmith](https://www.flagsmith.com/): Feature flag system
- Kubernetes
   - [Kubeshark](https://kubeshark.co/) api traffic analyzer for kubernetes
   - [Talos](https://www.talos.dev/) Dedicated Linux to run kubernetes nodes
   - [kwatch](https://kwatch.dev/) Monitor & detect crashes in your Kubernetes(K8s) cluster. Nice little tool, that I am actually a maintainer of
   - [Kube Downscaler](https://codeberg.org/hjacobs/kube-downscaler) Tool to automatically downscale k8s deployments, e.g. during weekends or outside of working hours
   - [Kilo](https://github.com/squat/kilo) Kilo is a multi-cloud network overlay built on WireGuard
   - [NSA Kubernetes Hardening Guidance](https://media.defense.gov/2021/Aug/03/2002820425/-1/-1/1/CTR_KUBERNETES%20HARDENING%20GUIDANCE.PDF) Learn from the most paranoid
   - [rbac manager](https://github.com/FairwindsOps/rbac-manager) Kubernetes operator that simplifies the managments of role bindings
   - [Reloader](https://github.com/stakater/Reloader) Reload Deployment on Configmap/Secret change
   - [Network Policy Editor](https://editor.cilium.io/?id=VZgVjWQmPwaIy6oA) Visual editor for k8s network policies
   - [k8s.af](https://k8s.af/) Kubernetes Failure Stories
   - [Infra App](https://infra.app/) Kubernetes desktop client
   - [a8r](https://ambassadorlabs.github.io/k8s-for-humans/) Kubernetes annotioantions convention to make working with services easier
   - [kubectl Cheat Sheet](https://kubernetes.io/docs/reference/kubectl/cheatsheet/) A list of common kubectl commands
   - [kubectl-neat](https://github.com/itaysk/kubectl-neat):  Clean up Kuberntes yaml and json output to make it readable
   - [K8s.af](https://k8s.af/) Kubernetes Failure Stories
   - [Conftest](https://www.conftest.dev/) An utility to write tests against structured configuration data (e.g. k8s yamls)
   - [k9s](https://github.com/derailed/k9s) Kubernetes CLI To Manage Your Clusters In Style!
- [Traefik](https://traefik.io/) Load balancer
- MicroVMs
   - [Firecracker](https://firecracker-microvm.github.io/) MicroVM used for AWS lambda
- [updown.io](https://updown.io/r/Zi7Uw) My favorite uptime monitor. Super cheap and notifies via Telegram as well
- [sudo_pair](https://github.com/square/sudo_pair) sudo_pair is a plugin for sudo that requires another human to approve and monitor privileged sudo sessions
- Reverse Tunnel
   - [sish](https://github.com/antoniomika/sish) An open source serveo/ngrok alternative.
   - [ngronk](https://ngrok.com/)
- [Bullet Train](https://bullet-train.io/) Feature flag system
- [SeawedFS](https://github.com/chrislusf/seaweedfs) SeaweedFS is a distributed object store and file system to store and serve billions of files fast!
- [Cloud Native Landscape](https://landscape.cncf.io/) All the cloud native projects in a graphic

Entrepreneurship

- [Spacebase](https://www.spacebase.com/en/) Co-working spaces and meeting rooms in europe
- [Founderio](https://www.founderio.com/de) Matching platform for german co-founders
- [Google Ngram Viewer](https://books.google.com/ngrams/) Displays a graph showing how phrases have occurred in a corpus of books
- [Bezos Numbers](https://docs.google.com/spreadsheets/d/1d-0WVqvBu9kNkFl51qmHG84fMKdGl2t5AHp1TS277lU/htmlview) Patrick Campbells sheet on emerging trends. Check it out for startup ideas to bloom in your head.
- [How to best raise prices for your SaaS](https://twitter.com/Patticus/status/1286663135496155136) Patrick Campbell on how to best raise prices
- [Leads Forge | Validate your Ideas with Ease!](https://www.theleadsforge.com/) Service to help you validate your business ideas for 199€. Not used it yet, but seems like this actually can be a good trade
- [Vanta](https://www.vanta.com/) Company to help you to become SOC2 ISO27001 compliant as software cmpany
- [Tackle](https://tackle.io/) A company that helps you to bill through AWS and GCP cloud marketplace. Great if you sell to big corps, as they don't have to jump through hoops to get their budgets approved
- [Embedable Roadmap](https://github.com/AvdLee/Roadmap) Embeddable roadmap into your product. Let your users vote on what to build next
- [Podcast Index](https://podcastindex.org/) Open (free) index of podcasts. Great for building your own podcast app/service
- [How to acquire your first 100 customers: find the funnel](https://www.youtube.com/watch?v=syTGYFlVHm4) Nice MicroConf Talk about how to find your first 100 customers
- [Enterprise Ready](https://www.enterpriseready.io/) Articles on how to get your SaaS ready for Enterprise users
- [ Relaunch like a pro: 100+ places to launch, relaunch, and list your product ](https://www.indiehackers.com/post/relaunch-like-a-pro-100-places-to-launch-relaunch-and-list-your-product-7c67875635)
- [Top 1 Million Sites on the Internet](https://hackertarget.com/top-million-site-list-download/)
- [Syften](https://syften.com/) (Paid) tool to monitor online communities for your keywords. Nice to reply to customer questions all around the web
- [MicroAquire](https://microacquire.com/) Site for selling and buying internet businesses
- [List of SaaS marketplaces](https://rocketgems.com/blog/saas-marketplaces/) Great to figure out on what platform to build your next plugin
- [Porkbun](https://porkbun.com/) Domain registry
- [The art of Scaling People](https://www.slideshare.net/endymi0n/the-art-of-scaling-people-english-short) Awesome Slideshare about how to grow the team in your startup
- [MicroAquire](https://microacquire.com/) Market place for selling your software startup
- [Open source alternatives to popular business tools](https://www.btw.so/open-source-alternatives)
- [SparkToro](https://sparktoro.com/) Audience research tool
- [Microsoft Clarity](https://clarity.microsoft.com/) Free hotjar alternative. Website heatmap tool
- [Chinwag](https://gochinwag.com/) Tool for user feedback
- [NocoDB](https://www.nocodb.com/) Open Source Airtable Alternative
- [Share Link Creator](https://www.websiteplanet.com/webtools/sharelink/) Easily create links which automatically share on Facebook or Twitter
- [Ideasfilter](http://ideasfilter.com/) Website to find apps with bad ratings in various app stores. Nice start for a niche research for you next idea
- [LimeSurvey](https://www.limesurvey.org/) Open source survey system
- Books
   - [Getting Real](https://basecamp.com/gettingreal) Book about building SaaS
   - [Makebook](https://makebook.io/)  Handbook by the great pieter levels

Filesharing

- [Sharedrop](https://www.sharedrop.io/) P2P filetransfer (via WebRTC)
- [OnionShare](https://onionshare.org/) Private P2P fileshareing via TOR

Hosting

- [Pinboard](https://pinboard.in/) Social Bookmarking tool
- [BunnyCDN](https://bunnycdn.com/)
- [Datacenterlight](https://datacenterlight.ch/) Green datacenter in switzerland
- [Uberspace](https://uberspace.de)
*My goto hoster as they support ssh access and golang*

Learning

- [Book.sv](https://book.sv/) Neat little tool find books you might like. Based on scraped good reads data with vector index
- [LCWO](https://lcwo.net/) Tool to learn morse code online
- Coding Challenges
   - [Best coding challenges on the web](https://dev.to/coderbyte/the-best-coding-challenge-websites-of-2020-3p6)
- [Machine learning courses](https://dev.to/digitaldefynd/10-best-free-machine-learning-courses-4kn1)
- [Online university courses](http://www.openculture.com/freeonlinecourses)
   - [Game Theory](https://oyc.yale.edu/economics/econ-1599) Open Yale Course about game theory
- [Missing CS Semester](https://www.youtube.com/c/MissingSemester) A youtube course by the MIT teaching all about programmer tooling

Linux

- [Stirling PDF](https://github.com/Frooodle/Stirling-PDF) Linux pdf tool
- [lossless-cut](https://github.com/mifi/lossless-cut) ffmpeg frontend for lossless video/audio editing
- [SadServers](https://sadservers.com/) Test website to work on a broken (sad) server and repair it. Great to sharpen your linux skills
- [systemdb by example](https://systemd-by-example.com/) This playground allows you to learn about systemd interactively, right in the browser
- [Espanso](https://espanso.org/) Cross-plattform text expander. Makes all your typing faster. With emoji support
- [Darling](https://www.darlinghq.org/) Wine for mac osx apps
- [shellfirm](https://github.com/kaplanelad/shellfirm) Intercept any risky patterns (default or defined by you) and prompt you a small challenge for double verification
- [fzf introduction video](https://www.youtube.com/watch?v=qgG5Jhi_Els) Youtube introdcution to the fzf fuzzy command line finder
- [Flameshot](https://flameshot.org/) Linux (wayland) screenshot tool
- [nq](https://github.com/leahneukirchen/nq)  Unix command line queue utility
- [Startship](https://starship.rs/) Shell prompt
- [Nerdfonts](https://www.nerdfonts.com/#home) Fonts with all the nice addons for coders
- Backup
   - [Restic](https://restic.net/blog/) Deduplicating backup solution. I prefer borg, though
   - [Restic](https://restic.net/) Backup software
   - Borg
      - [Borg](https://www.borgbackup.org/) Fast incremental backup tool
      - [Borgbase](https://www.borgbase.com/) Server for remote borg backups
*I like their feature to send me an email when no backup was made for X days. Prevents me to fuckup my automatic backup setup without recognizing it.*
      - [Vorta](https://pypi.org/project/vorta/) GUI for Borg
- [Anbox](https://anbox.io/) Run Android applications on any GNU/Linux operating system
- [Cast videos with linux pipes](https://alexdelorenzo.dev/linux/2020/03/14/pipes)
- Video calling
   - [NoiseTorch](https://github.com/lawl/NoiseTorch) Noice supression for the microphone

Marketing

- [Send your users this welcome email](https://justinjackson.ca/welcome-email) Ask your users why/how they found your company.
- [Creator Hooks](https://creatorhooks.com/past-creator-hooks-newsletters/) Neat newsletter to learn about how to create youtube hooks/titles/thumnails
- [1of10](https://1of10.com/) AI tool to analyize youtube videos and thumbnails to rank better
- [Marketing Examples](https://marketingexamples.com/inspiration) Example texts for copywriting
- [QRCode Monkey](https://www.qrcode-monkey.com/) Nice little FREE QR Code generator
- [PostHog](https://posthog.com/) Product analytics / tracking tool. Can build funnels
- [Meta Tags](https://metatags.io/) Preview how your metatags or your website look in different format
- [EmailFinder](https://github.com/Josue87/EmailFinder)  Search emails from a domain through search engines
- [ecommereceranker](https://ecommerceranker.com/) List of 100 biggest shopify stores. Especially the "how to" section is interesting
- [Sniper Link](https://sniperl.ink/) Sniper Link is a free tool that increases email confirmation rates by showing a button that directly opens the user’s email client.
- [Swiped](https://swiped.co/) Website with a lot of copywriting examples
- [BeeRoll](https://www.beeroll.io/) Platform to create ad creatives that look like user generated content
- [Developer Marketing on Social Media](https://www.developermarkepear.com/blog/developer-marketing-on-social-media-twitter-supabase) Guide on how to market to developers on twitter (can be used for linkedin as well)
- [Embedly](https://embed.ly/) Add your service widget to automatically have nice looking embeds in all major services (e.g. slack spotify player when you share a spotify link)
- [Meme templates](https://imgflip.com/memetemplates) Great for memeing topics in your industry and share on social media
- [Help A Reporter](https://www.helpareporter.com/) Platforms where reporters can reach out to industry experts. You can register as such expert and have the opportunity to create PR for your company
   - https://www.enoughdigital.com/2022/10/27/how-to-create-a-personal-journalist-request-alert-system/
- [Newsletter landingpage optimization](https://twitter.com/JMatthewMcGarry/status/1579922249817071617) Nice tweet on how to tweak your newsletter landingpage to perform better
- [PostHog](https://posthog.com/) Actually it is an analytics platform with A/B testing and stuff, but what is super lovely is their landing page. Check it out, it is so well crafted. Techie but not being overwhelmingly only dark mode :D
- [The influence map](https://sparktoro.com/blog/influence-maps-the-best-marketing-framework-youve-never-heard-of/) IMO quite nice marketing framework by sparktoro on how to figure out, where and how you should talk to your potential audience/customers
- [Cameo](https://www.cameo.com/) Service to buy personalized videos made by your favorite actors. Nice presents.
- [Cold email templates](https://www.lemlist.com/cold-email-templates) A list of cold email templates based on real users data and expertise
- [check-if-email-exists
](https://github.com/reacherhq/check-if-email-exists) Check if an email address exists without sending any email
- On-site
   - [Marketing examples](https://marketingexamples.com/)
   - [SasS pages examples](https://saaspages.xyz/)
   - [Page Flows](https://pageflows.com/) Design better user flows by learning from proven products
- Social media
   - [Notify](https://notify.ly/) Tool to get notified when someone mentions your brand
   - [Influencer search engine](https://idb.buzzstream.com/)
- Website analytics
   - [Matomo](https://matomo.org/) 
*This is the analytics platform I use for my sites. But you should tweak it a bit as otherwise it is blocked by most adblockers. Will write a blogpost about that in the future how I did that and now no blocker is blocking it anymore :D Tune in at [simon-frey.com/blog](https://simon-frey.com/blog)*
   -  [Plausible](https://plausible.io/) Privacy friendly analytics

News sources

- Programmer news

Payment

- [Stunning](https://stunning.co/) Stripe payment recovery

Podcasts

- Startup
   - [Creative Class](https://creativeclass.co/podcast/)
   - [HIBT](http://www.npr.org/series/490248027/how-i-built-this)
   - [Startups for the rest of us](https://www.startupsfortherestofus.com/)
   - [Tropial MBA](https://www.tropicalmba.com/)
- Tech
   - [Go Time](https://changelog.com/gotime)
   - [Security now](https://twit.tv/shows/security-now)

Music

- [Fearless salary negotiation](https://fearlesssalarynegotiation.com/book/) This ebook walks you through the steps of a salary negotiation process
- [cchound](https://cchound.com/) Free CC licensed music

Productivity tools

- [Free Online Form Builder](https://tally.so/)
- [Excalidraw](https://excalidraw.com/) Online Drawing board (best to use with a graphics tables)
- [😍 Markdown Map](https://markdown-map.com/) Convert Markdown to Mindmaps. From lists and header structures. Amazing if you - like me - live in markdown.
- [VidGuide](https://www.vidguide.com/) Loom alternative with application tagging in browser
- [Screen Studio](https://www.screen.studio/) Screen recorder for macOS, great to build neat product demos
- [ScreenRec](https://screenrec.com/) Free Loom alternative. With Linux client
- [Cloudflare Warp](https://cloudflarewarp.com/) Fast internet by loading from cloudflares caches
- [Caldenso](https://github.com/calendso/calendso) Open source calendly alternative
- [Dendron](https://wiki.dendron.so/) Hierarchical note taking
- [Focalboard](https://www.focalboard.com/) Open source kanban board
- [github1s](https://github.com/conwnet/github1s) Read any github repo in an online vs code interface. I like it better than original github
- [Wekan](https://wekan.github.io/) Open source kanban board
- [Statping](https://github.com/statping/statping/) Open source status page service
- Time tracking
   - [Toggl](https://toggl.com)
*For my client work I need an accurate time tracking tool. Toogl gives nice insights and the free plan is all I ever need*
- ToDo List
   -  [checkvist](https://checkvist.com/)
*I started with workflowy, but the just not offer enough functonality. What I like about checkvist is its high customizability and the good support. Btw. this list is build with checkvist as backend*
- [Learn typing by typing novels](https://www.typelit.io/)

Security

- [SupaExplorer](https://supaexplorer.com/) Security Scanner for supabase setup
- [Wireless Geographic Logging Engine](https://wigle.net/) List of wifi spots around the globe. Huge database
- [subfinder](https://github.com/projectdiscovery/subfinder) Passive subdomain enumeration tool
- [OSINT Tools Directory](https://osint.broker/) Directory of tools to do osint research
- [TrustShare](https://www.trustcloud.ai/trustshare/) Security Questionnaire Automation to get SOC2
- [Bypass Cloudflare](https://www.zenrows.com/blog/bypass-cloudflare)t Article on how to bypass scraping protection
- [Forcing a device to disconnect from WiFi using a deauthentication attack](https://hackernoon.com/forcing-a-device-to-disconnect-from-wifi-using-a-deauthentication-attack-f664b9940142) Use WIFI "go away" packages to push deives of the wifi
- [Am I Unique](https://www.amiunique.org/fingerprint) Service that shows you what parameters of your device can be used for fingerprinting
- [HackTheBox](https://www.hackthebox.com/) Online pentest training. Hack into a VM with increasing complexity
- [FotoForensics](https://fotoforensics.com/) Little online tool for fast foto metadata checks
- [Subfinder](https://github.com/projectdiscovery/subfinder) A subdomain discovery tool that returns valid subdomains for websites, using passive online sources. New learning for me: It is hard to find subdomains, you are not able to get them via DNS
- [MASSCAN: Mass IP port scanner](https://github.com/robertdavidgraham/masscan) Port scanner with own network stack in order to scan entire internet in <10 minutes
- [ModSecurity Core Rule Set](https://coreruleset.org/) OWASP rule set to automatically configure your WAF
- [mitmproxy](https://mitmproxy.org/) HTTPS man-in-the-middle proxy
- [theHarvester](https://github.com/laramies/theHarvester) OSINT tool to get emails, names, subdomains
- [Regexploit](https://github.com/doyensec/regexploit) Find vulnerable regex expressions
- [Virustotal url scanner](https://www.virustotal.com/gui/home/url) Scan websites for viruses
- [Zed Attack Proxy](https://www.zaproxy.org/) Toolsuite to inspect your websites security
- [Universal Radio Hacker](https://github.com/jopohl/urh) Investigate wireless protocols with your SDR
- [Cyper security virtual exscape room](https://eloeffler.gitlab.io/eloeffler/proto-vcser/)
- Crypto
   - [Tink](https://github.com/google/tink) Cross-platform, open source library that provides cryptographic APIs
- OWASP
   - [ZAP](https://www.zaproxy.org/) web app scanner to build better webapps
- Pwn
   - [pwn.college](https://pwn.college/)  
*A education platform to learn about core cybersecurity concepts in a hands-on fashion.*

Privacy

- [Dangerzone](https://dangerzone.rocks/) Take potentially dangerous PDFs, office documents, or images and convert them to safe PDFs.
- Data Broker
   - [Big Ass Data Broker Opt-Out List](https://github.com/yaelwrites/Big-Ass-Data-Broker-Opt-Out-List) List how to opt-out from several internet data brokers

SEO

- [SaaS SEO Guide](https://growtika.com/blog/saas-seo-guide)
- [Business Directory Sites](https://businessdirectorysites.com/) List of directories where you can submit your startup for backlinks
- [TopicLoops](https://www.topicloops.com/) Tool to find a lot of adjacent topics to a keyword. Great for in-depth exploring a topic
- [Rivalflow](https://www.rivalflow.com/) Tool to identify SEO content GAPs and close them
- [SEO for Devs](https://seofordevs.com/) Free email course on SEO
- [SEO Stuff](https://www.seo-stuff.com/) Token-based keyword research tool, kinda neat, that you don't need a crazy expensive monthly subscription
- [crUX top lists](https://github.com/zakird/crux-top-lists) The top 1 million websites, based of the CrUX data
- [Keyword Surfer Chrome Extension](https://chrome.google.com/webstore/detail/keyword-surfer/bafijghppfhdpldihckdcadbcobikaca) Do keyword analysis directly in your google search results page
- [DomCop](https://www.domcop.com/) Tool to find expired Domains With Great Backlinks
- [Canonical Tags](https://ahrefs.com/blog/canonical-tags/) Learn how to propperly set canonicals on your page
- [Jasper.AI](https://www.jasper.ai/) GPT-3 supported copy writing tool
- [Schema Markup Generator](https://technicalseo.com/tools/schema-markup-generator/) Generator for Schema.org tags to get into Google search snippets
- [Ubersuggest](https://app.neilpatel.com/de/ubersuggest/) Free keyword research tool
- [Competition checker](https://www.sistrix.de/)
- Course
   - [SEO Foundation](https://zenacademy.com.au/course/seo-foundations/) Free SEO course
- Outreach
- Keyword research
   - [AnswerThePublic](https://answerthepublic.com) Find out what people are asking around a certain topic. Nice for writing niche SEO content
   - [Ubersuggest](https://neilpatel.com/de/ubersuggest/) Domain keyword finder
   - [Keyword Tool](https://keywordtool.io/) Free Tool to find Keywords using Google Autocomplete

Sales

- [Outscraper](https://outscraper.com/) Great low-cost google maps scraping service. Good if you are looking for cold-calling contacts
- [Hunter.io](https://hunter.io/) Email adress spider for website. Find email adresses for websites to contact
- [Pitchbox](https://pitchbox.com/) (Expensive) tool for col emails and outreach

Team communication

- [Random Question Maker](https://randomquestionmaker.com/) Tool for creating questions
- [Jitsi](https://meet.jit.si/) Open source video chat working in the browser without login
- [Krisp](https://krisp.ai/) Remove background noice from videocalls

Web accessability

- [equal-access](https://github.com/IBMa/equal-access) IBM toolset to help with building accessable systems
- [wave](https://wave.webaim.org) Web accessability evaluation tool

Cryptocurrencies

- [Cryptoeconomics Study](https://www.youtube.com/channel/UCGagQMCWglF-oGt8HKZfHNg/videos) Nice channel about the cryptographical basis of crypto currencies
- [LocalBitcoins](http://localbitcoins.com/) Trade bitcoins person-to-person in an easy, fast, and secure way.

JavaScript

- [echarts](https://echarts.apache.org/en/index.html) Javascript data visualization library
- [deeplinks.js](https://github.com/WesleyAC/deeplinks) Allow to deep link into any text highlight on your site. Quite nice for text heavy blogs
- [Conversational Form](https://space10-community.github.io/conversational-form/docs/0.9.70/getting-started/) Awesome library do build chat like looking forms
- [MapLibre GL](https://github.com/maplibre/maplibre-gl-js) Interactive maps in the browser based on vector files and WebGL
- [Vue Native](https://vue-native.io/) Build cross platform native apps in vue
- WebTorrent
   - [WebTorrent Workshop](https://webtorrent.github.io/workshop/)

Web scraping

- [Browserless](https://browserless.io)
*The first headless chrome that didn't explode into my face when running it longer than a few hours*
- [Colly scraping framework](https://github.com/gocolly/colly)
- [SimpleScraper](https://simplescraper.io/)
- [Alpine chrome](https://github.com/Zenika/alpine-chrome) Headless chrome running in docker

Wordpress plugins

- [If-So Dynamic Content](https://www.if-so.com/) Wordpress Plugin to programmatically change text on your page
- SEO
   - [Autodescription](https://wordpress.org/plugins/autodescription/)

Writing

- [Landing Page Copywriting](https://www.julian.com/guide/startup/landing-pages) Guide on how to optimize your startups landingpage
- [Text correction](https://languagetool.org/)

Privacy

- [ArchiveBox](https://github.com/ArchiveBox/ArchiveBox/wiki/Quickstart) The open-source self-hosted web archive.
- [mat2](https://metadata.systemli.org/) Remove image metadata online

Chaos Engineering

- [Gremlin](https://www.gremlin.com/) Chaos engineering platform
- [Chaos Monkey](https://netflix.github.io/chaosmonkey/)
- [Chaos Mesh](https://github.com/chaos-mesh/chaos-mesh) Cloud Native k8s chaos framework
- [ChaosKube](https://github.com/linki/chaoskube)  periodically kills random pods in your Kubernetes cluster

Remote Work

- [Rambly](https://rambly.app) Only spacial voice chat. You can walk around and when you get close to groups you hear them louder
- [Work Adventure](https://workadventu.re/) Online map to walk around and talk to your coworkers

Random

- [Mental Model Practices](https://mmpractices.com/) List of mental models. No clue what you really need it for, but apparently people find this kinda things important
- [List of remote job boards](https://airtable.com/shrqC42MFabPnjSLz/tblkcrZGNHf2XGfn3)
- [Justiz Auktion](https://www.justiz-auktion.de/kategorien) [German] German ebay for confiscated good. Buy what police did seize.
- [Snapdrop](https://snapdrop.net/) Local filesharing via webRTC
- [Random](https://simon-frey.com/random/) Enough work for today Here some random internet to distract you ;)