We work hard to contribute our work back to the web, mobile, big data, & infrastructure communities. NB: members must have two-factor auth.
A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.
An open-source C++ library developed and used at Facebook.
Relay is a JavaScript framework for building data-driven React applications.
A bytecode optimizer for Android apps
A virtual machine designed for executing programs written in Hack and PHP.
Friendly Syntax & Toolchain Powered by OCaml
Smooth asynchronous user interfaces for iOS apps.
A framework for building native apps with React.
A declarative, efficient, and flexible JavaScript library for building user interfaces.
A collection of C++ HTTP libraries including an easy to use HTTP server.
An open IDE for web and native mobile development, built on top of Atom
A library that provides an embeddable, persistent key-value store for fast storage.
Yoga is a cross-platform layout engine which implements Flexbox. Follow https://twitter.com/yogalayout for updates.
SQL powered operating system instrumentation, monitoring, and analytics.
Zstandard - Fast real-time compression algorithm
Facebook's branch of the Oracle MySQL v5.6 database. This includes MyRocks.
A static analyzer for Java, C, C++, and Objective-C
c java objective-c cpp static-code-analysis static-analysis code-quality
Copy commits between repositories - git => git, git => hg, hg => hg, or hg => git
Adds static typing to JavaScript to improve developer productivity and code quality.
Platform to host Capture the Flag competitions
Facebook's IT - Client Platform Engineering tools. Some of the tools we have written to help manage our fleet of client systems.
Mcrouter is a memcached protocol router for scaling memcached deployments.
testing facebook immersive painless expectation easy snapshot
Open source chef cookbooks.
A React framework for building text editors.
Watches files and records, or triggers actions, when they change.
An extension that allows inspection of React component hierarchy in Chrome Developer Tools.
Surround360 is Facebook's open source hardware and software for capturing stereoscopic 3D 360 video for VR. The repo contains hardware designs, as well as software for camera control and rendering.
A Mac OS X library for managing and manipulating iOS Simulators
A collection of utility libraries used by other Facebook JS projects.

