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    162 repositories

    • react-native

      Public
      A framework for building native applications using React
      reactandroidiosmobilereact-nativecross-platformapp-frameworkmobile-development
      C++
      •
      MIT License
      •25k•125k•738•447•Updated Feb 14, 2026Feb 14, 2026

    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      •
      Other
      •377•955•25•133•Updated Feb 14, 2026Feb 14, 2026

    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      OCaml
      •
      MIT License
      •1.9k•22k•605•13•Updated Feb 14, 2026Feb 14, 2026

    • pyrefly

      Public
      A fast type checker and language server for Python
      pythonrusttypecheckertypeslanguage-serveridetypingcode-qualityhacktoberfesttypecheck
      Rust
      •
      MIT License
      •270•5.3k•362•57•Updated Feb 14, 2026Feb 14, 2026

    • hermes

      Public
      A JavaScript engine optimized for running React Native.
      JavaScript
      •
      MIT License
      •734•11k•120•55•Updated Feb 14, 2026Feb 14, 2026

    • hhvm

      Public
      A virtual machine for executing programs written in Hack.
      phphackhhvmhacklang
      C++
      •
      Other
      •3.1k•19k•409•108•Updated Feb 14, 2026Feb 14, 2026

    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      •
      Apache License 2.0
      •627•2.7k•44•5•Updated Feb 14, 2026Feb 14, 2026

    • fresco

      Public
      An Android library for managing images and the memory they use.
      Java
      •
      MIT License
      •3.8k•17k•247•13•Updated Feb 14, 2026Feb 14, 2026

    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      •
      Other
      •1.5k•8.3k•23•16•Updated Feb 14, 2026Feb 14, 2026

    • redex

      Public
      A bytecode optimizer for Android apps
      C++
      •
      MIT License
      •679•6.3k•56•17•Updated Feb 14, 2026Feb 14, 2026

    • buck2

      Public
      Build system, successor to Buck
      Rust
      •
      Apache License 2.0
      •327•4.3k•276•69•Updated Feb 14, 2026Feb 14, 2026

    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      •
      GNU General Public License v2.0
      •340•6.7k•232•61•Updated Feb 14, 2026Feb 14, 2026

    • Ax

      Public
      Adaptive Experimentation Platform
      Python
      •
      MIT License
      •357•2.7k•37•136•Updated Feb 14, 2026Feb 14, 2026

    • openzl

      Public
      A novel data compression framework
      C
      •
      Other
      •132•2.9k•37•44•Updated Feb 14, 2026Feb 14, 2026

    • buck2-prelude

      Public
      Prelude for the Buck2 project
      Starlark
      •
      Apache License 2.0
      •61•61•1•2•Updated Feb 14, 2026Feb 14, 2026

    • facebook-for-woocommerce

      Public
      The official plugin from Meta. This repository is now officially maintained by Meta's engineering team. We welcome and encourage contributions from the communit…
      PHP
      •
      GNU General Public License v2.0
      •181•249•83•142•Updated Feb 14, 2026Feb 14, 2026

    • openbmc

      Public
      OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).
      C
      •
      Apache License 2.0
      •300•671•43•7•Updated Feb 14, 2026Feb 14, 2026

    • rocksdb

      Public
      A library that provides an embeddable, persistent key-value store for fast storage.
      databasestorage-engine
      C++
      •
      GNU General Public License v2.0
      •6.7k•32k•841•569•Updated Feb 14, 2026Feb 14, 2026

    • OpenBIC

      Public
      BICs (Bridge IC) are standalone devices deployed within a Data Center that enable monitoring a multi-host system using a single BMC device.
      C
      •
      Apache License 2.0
      •55•63•5•5•Updated Feb 14, 2026Feb 14, 2026

    • mvfst

      Public
      An implementation of the QUIC transport protocol.
      C++
      •
      MIT License
      •278•1.6k•39•5•Updated Feb 14, 2026Feb 14, 2026

    • relay

      Public
      Relay is a JavaScript framework for building data-driven React applications.
      Rust
      •
      MIT License
      •1.9k•19k•621•184•Updated Feb 13, 2026Feb 13, 2026

    • hyperion

      Public
      This project enabled intercepting and virtualizing the browser API
      TypeScript
      •
      MIT License
      •31•45•4•10•Updated Feb 13, 2026Feb 13, 2026

    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      •
      Apache License 2.0
      •5.8k•30k•310•135•Updated Feb 13, 2026Feb 13, 2026

    • stylex

      Public
      StyleX is the styling system for ambitious user interfaces.
      JavaScript
      •
      MIT License
      •390•9.1k•95•25•Updated Feb 13, 2026Feb 13, 2026

    • dotslash

      Public
      Simplified executable deployment
      Rust
      •
      Apache License 2.0
      •50•806•15•3•Updated Feb 13, 2026Feb 13, 2026

    • fb303

      Public
      fb303 is a core set of thrift functions that provide a common mechanism for querying stats and other information from a service.
      C++
      •
      Apache License 2.0
      •60•91•6•12•Updated Feb 13, 2026Feb 13, 2026

    • metro

      Public
      🚇 The JavaScript bundler for React Native
      javascriptbundlerreact-native
      JavaScript
      •
      MIT License
      •674•5.6k•360•64•Updated Feb 13, 2026Feb 13, 2026

    • mariana-trench

      Public
      A security focused static analysis tool for Android and Java applications.
      C++
      •
      MIT License
      •158•1.2k•40•3•Updated Feb 13, 2026Feb 13, 2026

    • lexical

      Public
      Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
      TypeScript
      •
      MIT License
      •2.1k•23k•542•19•Updated Feb 13, 2026Feb 13, 2026

    • CacheLib

      Public
      Pluggable in-process caching engine to build and scale high performance services
      performancecppcacheconcurrencyssdcache-engine
      C++
      •
      Apache License 2.0
      •316•1.5k•15•30•Updated Feb 13, 2026Feb 13, 2026