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We work hard to contribute our work back to the web, mobile, big data, & infrastructure communities. NB: members must have two-factor auth.

buck

A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.

Updated Sep 30, 2016

xcbuild

Xcode-compatible build tool.

Updated Sep 29, 2016

fbthrift

Facebook's branch of Apache Thrift, including a new C++ server.

Updated Sep 29, 2016

JavaScript 50,625 8,834

react

A declarative, efficient, and flexible JavaScript library for building user interfaces.

Updated Sep 29, 2016

react-native

A framework for building native apps with React.

Updated Sep 30, 2016

reason

Friendly Syntax & Toolchain Powered by OCaml

Updated Sep 30, 2016

Objective-C 448 111

WebDriverAgent

A WebDriver server for iOS that runs inside the Simulator.

Updated Sep 30, 2016

wdt

Warp speed Data Transfer (WDT) is an embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths.

Updated Sep 30, 2016

flow

Adds static typing to JavaScript to improve developer productivity and code quality.

Updated Sep 29, 2016

osquery

SQL powered operating system instrumentation, monitoring, and analytics.

Updated Sep 30, 2016

JavaScript 7,583 556

draft-js

A React framework for building text editors.

Updated Sep 30, 2016

JavaScript 5,524 677

jest

Painless JavaScript Testing.

Updated Sep 30, 2016

rocksdb

A library that provides an embeddable, persistent key-value store for fast storage.

Updated Sep 29, 2016

redex

A bytecode optimizer for Android apps

Updated Sep 30, 2016

JavaScript 5,092 352

nuclide

An open IDE for web and native mobile development, built on top of Atom

Updated Sep 30, 2016

Objective-C 9,312 1,616

AsyncDisplayKit

Smooth asynchronous user interfaces for iOS apps.

Updated Sep 29, 2016

fboss

Facebook Open Switching System Software for controlling network switches.

Updated Sep 30, 2016

JavaScript 2,894 326

react-devtools

An extension that allows inspection of React component hierarchy in Chrome Developer Tools.

Updated Sep 30, 2016

hhvm

A virtual machine designed for executing programs written in Hack and PHP.

Updated Sep 29, 2016

folly

An open-source C++ library developed and used at Facebook.

Updated Sep 29, 2016