A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.
SQL powered operating system instrumentation, monitoring, and analytics.
Friendly Syntax & Toolchain Powered by OCaml
Stetho is a debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.
Platform to host Capture the Flag competitions
Zstandard - Fast real-time compression algorithm
A framework for building native apps with React.
A collection of utility libraries used by other Facebook JS projects.
A collection of C++ HTTP libraries including an easy to use HTTP server.
A library that provides an embeddable, persistent key-value store for fast storage.
An open IDE for web and native mobile development, built on top of Atom
Yoga is a cross-platform layout engine which implements Flexbox. Yoga enables maximum collaboration within your team by implementing an API familiar to many designers and opening it up to developers across different platforms.
Remodel is a tool that helps iOS and OS X developers avoid repetitive code by generating Objective-C models that support coding, value comparison, and immutability.
A virtual machine designed for executing programs written in Hack and PHP.
Xcode-compatible build tool.
A bytecode optimizer for Android apps
Application Architecture for Building User Interfaces
Smooth asynchronous user interfaces for iOS apps.
Wangle is a framework providing a set of common client/server abstractions for building services in a consistent, modular, and composable way.
A Mac OS X library for managing and manipulating iOS Simulators
Watches files and records, or triggers actions, when they change.
Facebook Open Switching System Software for controlling network switches.
OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).
Facebook's branch of the Oracle MySQL v5.6 database. This includes MyRocks.
Facebook's branch of Apache Thrift, including a new C++ server.
An open-source C++ library developed and used at Facebook.