Open Repos beta
Explore how your favorite open source repos (aka "Oreps") are changing over time, and discover opportunities to contribute to the open source community. Read our introduction to Oreps.

Open source research data repository software
A privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. roadmap: http://trello.com/b/8txSM12G/roadmap
The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.
A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.
Free and Online Accounting Software
ProseMirror toolkit for React 🎉
Statistical data visualization in Python
Routing and navigation for your React Native apps
cross-platform (Qt), open-source (GPLv3) video editor
Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.