Facebook

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

Set up a modern web app by running one command.

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

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

A virtual machine for executing programs written in Hack.

Delightful JavaScript Testing.

SQL powered operating system instrumentation, monitoring, and analytics.

Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems

Fatal is a library for fast prototyping software in modern C++. It provides facilities to enhance the expressive power of C++. The library is heavily based on template meta-programming, while keeping the complexity under-the-hood.

Distributed platform for building autonomic network functions.

The site and docs for React Native

A framework for building native apps with React.

A static analyzer for Java, C, C++, and Objective-C

Bistro is a flexible distributed scheduler, a high-performance framework supporting multiple paradigms while retaining ease of configuration, management, and monitoring.

Wangle is a framework providing a set of common client/server abstractions for building services in a consistent, modular, and composable way.

Watches files and records, or triggers actions, when they change.

Facebook ZeroMQ wrappers.

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

Easy to maintain open source documentation websites.

A JavaScript codemod toolkit.

A collection of C++ HTTP libraries including an easy to use HTTP server.

Debug server for lldb.

Mcrouter is a memcached protocol router for scaling memcached deployments.

Relay is a JavaScript framework for building data-driven React applications.

A bytecode optimizer for Android apps

Language, engine, and tooling for expressing, testing, and evaluating composable language rules on input strings.

Integrate your iOS apps in Swift with Facebook Platform.

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