Master programming by recreating your favorite technologies from scratch.

A collective list of free APIs

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 Kimi-K2.5, GLM-4.7, DeepSeek, gpt-oss, Qwen, Gemma and other models.

Production-ready platform for agentic workflow development.

Virtual whiteboard for sketching hand-drawn like diagrams

JavaScript 3D Library.

Empowering everyone to build reliable and efficient software.

A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

A utility-first CSS framework for rapid UI development.

GPT4All: Run Local LLMs on Any Device. Open-source and available for commercial use.

Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

Course to get into Large Language Models (LLMs) with roadmaps and Colab notebooks.

A new bootable USB solution.

#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

Source code for the X Recommendation Algorithm

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

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

Simple HTML5 Charts using the <canvas> tag

JavaScript animation engine

The official gpt4free repository | various collection of powerful language models | o4, o3 and deepseek r1, gpt-4.1, gemini 2.5

Curated list of design and UI resources from stock photos, web templates, CSS frameworks, UI libraries, tools and much more

Realtime application framework (Node.JS server)

🦀 Small exercises to get you used to reading and writing Rust code!

📚 Collaborative cheatsheets for console commands

Open Source realtime backend in 1 file

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.