A collective list of free APIs

📚 Freely available programming books

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

All Algorithms implemented in Python

🦜🔗 The platform for reliable agents.

🙌 OpenHands: Code Less, Make More

Facebook AI Research Sequence-to-Sequence Toolkit written in Python.

🗃 Open source self-hosted web archiving. Takes URLs/browser history/bookmarks/Pocket/Pinboard/etc., saves HTML, JS, PDFs, media, and more...

Qwen3 is the large language model series developed by Qwen team, Alibaba Cloud.

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

ChatRWKV is like ChatGPT but powered by RWKV (100% RNN) language model, and open source.

The Open edX LMS & Studio, powering education sites around the world!

Misago is fully featured modern forum application that is fast, scalable and responsive.