Open source year in review

What this post added

This post details Meta's open source contributions in 2019, highlighting the release of 170 new projects and the growth of active repositories to 579. It emphasizes the significant contributions from both internal engineers and external community members, with over 32,000 changes from approximately 2,500 external contributors. Key developments include the thriving GraphQL Foundation and the establishment of the Presto Foundation. The post also showcases advancements in PyTorch, including PyTorch Mobile, CrypTen for privacy-preserving ML, and Captum for model interpretability. For mobile and web development, it highlights React, React Native, the Hermes JavaScript engine for mobile optimization, and the Magma platform for automating mobile network management. Additionally, the Hydra framework for simplifying Python application development and work on the blockchain front with the Libra Association are mentioned.