Master programming by recreating your favorite technologies from scratch.

A complete computer science study plan to become a software engineer.

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

🎓 Path to a free self-taught education in Computer Science!

Get up and running with OpenAI gpt-oss, DeepSeek-R1, Gemma 3 and other models.

Virtual whiteboard for sketching hand-drawn like diagrams

Collection of publicly available IPTV channels from all over the world

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

A collection of (mostly) technical things every software developer should know about

A utility-first CSS framework for rapid UI development.

web development for the rest of us

Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown

🏡 Open source home automation that puts local control and privacy first.

The fastest path to AI-powered full stack observability, even for lean teams.

An open-source cross-platform alternative to AirDrop

Tesseract Open Source OCR Engine (main repository)

Apache Superset is a Data Visualization and Data Exploration Platform

OBS Studio - Free and open source software for live streaming and screen recording

Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

Run your GitHub Actions locally 🚀

The Patterns of Scalable, Reliable, and Performant Large-Scale Systems

There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable an…

openpilot is an operating system for robotics. Currently, it upgrades the driver assistance system on 300+ supported cars.

ripgrep recursively searches directories for a regex pattern while respecting your gitignore

A simple zero-config tool to make locally trusted development certificates with any names you'd like.

Open Source realtime backend in 1 file

"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files

A tool for exploring each layer in a docker image

Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.

Modern CSS framework based on Flexbox