Repositories list

• pyrefly

  Public

  facebook/pyrefly’s past year of commit activity
  A fast type checker and language server for Python

  pythonrusttypechecker+ 12typeslanguage-serveridetypingcode-qualityhacktoberfesttypecheck+ 5

  Rust

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  MIT License

  •213•4.9k•392•33•Updated Dec 4, 2025Dec 4, 2025

• react

  Public

  facebook/react’s past year of commit activity
  The library for web and native user interfaces.

  reactjavascriptlibrary+ 3uifrontenddeclarative

  JavaScript

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  MIT License

  •50k•241k•854•239•Updated Dec 4, 2025Dec 4, 2025

• buck2

  Public

  facebook/buck2’s past year of commit activity
  Build system, successor to Buck

  Rust

  •

  Apache License 2.0

  •308•4.2k•269•35•Updated Dec 4, 2025Dec 4, 2025

• ocamlrep

  Public

  facebook/ocamlrep’s past year of commit activity
  Sets of libraries and tools to write applications and libraries mixing OCaml and Rust. These libraries will help keeping your types and data structures synchronized, and enable seamless exchange between OCaml and Rust

  Rust

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  MIT License

  •25•136•0•5•Updated Dec 4, 2025Dec 4, 2025

• stylex

  Public

  facebook/stylex’s past year of commit activity
  StyleX is the styling system for ambitious user interfaces.

  JavaScript

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  MIT License

  •361•9k•75•21•Updated Dec 4, 2025Dec 4, 2025

• fboss

  Public

  facebook/fboss’s past year of commit activity
  Facebook Open Switching System Software for controlling network switches.

  C++

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  Other

  •361•936•25•76•Updated Dec 4, 2025Dec 4, 2025

• kuduraft

  Public

  facebook/kuduraft’s past year of commit activity
  A Raft Library in C++ based on the Raft implementation in Apache Kudu

  C++

  •

  Apache License 2.0

  •658•142•0•0•Updated Dec 4, 2025Dec 4, 2025

• openzl

  Public

  facebook/openzl’s past year of commit activity
  A novel data compression framework

  C

  •

  Other

  •111•2.8k•31•23•Updated Dec 4, 2025Dec 4, 2025

• hhvm

  Public

  facebook/hhvm’s past year of commit activity
  A virtual machine for executing programs written in Hack.

  phphackhhvm+ 1hacklang

  C++

  •

  Other

  •3.1k•19k•409•114•Updated Dec 4, 2025Dec 4, 2025

• fbthrift

  Public

  facebook/fbthrift’s past year of commit activity
  Facebook's branch of Apache Thrift, including a new C++ server.

  C++

  •

  Apache License 2.0

  •623•2.7k•44•5•Updated Dec 4, 2025Dec 4, 2025

• mcrouter

  Public

  facebook/mcrouter’s past year of commit activity
  Mcrouter is a memcached protocol router for scaling memcached deployments.

  C++

  •

  MIT License

  •548•3.3k•97•20•Updated Dec 4, 2025Dec 4, 2025

• openbmc

  Public

  facebook/openbmc’s past year of commit activity
  OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).

  C

  •

  Apache License 2.0

  •300•666•43•6•Updated Dec 4, 2025Dec 4, 2025

• react-native

  Public
  A framework for building native applications using React

  reactandroidios+ 5mobilereact-nativecross-platformapp-frameworkmobile-development

  C++

  •

  MIT License

  •25k•125k•707•425•Updated Dec 4, 2025Dec 4, 2025

• Ax

  Public

  facebook/Ax’s past year of commit activity
  Adaptive Experimentation Platform

  Python

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  MIT License

  •352•2.7k•27•110•Updated Dec 4, 2025Dec 4, 2025

• lexical

  Public

  facebook/lexical’s past year of commit activity
  Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.

  TypeScript

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  MIT License

  •2.1k•23k•530•34•Updated Dec 4, 2025Dec 4, 2025

• igl

  Public

  facebook/igl’s past year of commit activity
  Intermediate Graphics Library (IGL) is a cross-platform library that commands the GPU. It provides a single low-level cross-platform interface on top of various graphics APIs (e.g. OpenGL, Metal and Vulkan).

  C++

  •

  Other

  •198•3.1k•4•6•Updated Dec 4, 2025Dec 4, 2025

• redex

  Public

  facebook/redex’s past year of commit activity
  A bytecode optimizer for Android apps

  C++

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  MIT License

  •675•6.2k•56•16•Updated Dec 4, 2025Dec 4, 2025

• mariana-trench

  Public

  facebook/mariana-trench’s past year of commit activity
  A security focused static analysis tool for Android and Java applications.

  C++

  •

  MIT License

  •155•1.2k•40•3•Updated Dec 4, 2025Dec 4, 2025

• folly

  Public

  facebook/folly’s past year of commit activity
  An open-source C++ library developed and used at Facebook.

  C++

  •

  Apache License 2.0

  •5.8k•30k•305•112•Updated Dec 4, 2025Dec 4, 2025

• sapling

  Public

  facebook/sapling’s past year of commit activity
  A Scalable, User-Friendly Source Control System.

  Rust

  •

  GNU General Public License v2.0

  •325•6.6k•226•53•Updated Dec 4, 2025Dec 4, 2025

• facebook-for-woocommerce

  Public

  facebook/facebook-for-woocommerce’s past year of commit activity
  The official plugin from Meta. This repository is now officially maintained by Meta's engineering team. We welcome and encourage contributions from the community.

  PHP

  •

  GNU General Public License v2.0

  •176•243•73•105•Updated Dec 4, 2025Dec 4, 2025

• flow

  Public

  facebook/flow’s past year of commit activity
  Adds static typing to JavaScript to improve developer productivity and code quality.

  OCaml

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  MIT License

  •1.9k•22k•611•16•Updated Dec 4, 2025Dec 4, 2025

• fresco

  Public

  facebook/fresco’s past year of commit activity
  An Android library for managing images and the memory they use.

  Java

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  MIT License

  •3.8k•17k•243•10•Updated Dec 4, 2025Dec 4, 2025

• OpenBIC

  Public

  facebook/OpenBIC’s past year of commit activity
  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

  •52•61•5•7•Updated Dec 4, 2025Dec 4, 2025

• pyre-check

  Public

  facebook/pyre-check’s past year of commit activity
  Performant type-checking for python.

  pythonsecuritytypechecker+ 8static-analysisocamlcontrol-flow-analysiscode-qualityprogram-analysistaint-analysisabstract-interpretation+ 1

  OCaml

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  MIT License

  •451•7.1k•132•27•Updated Dec 4, 2025Dec 4, 2025

• relay

  Public

  facebook/relay’s past year of commit activity
  Relay is a JavaScript framework for building data-driven React applications.

  Rust

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  MIT License

  •1.9k•19k•614•166•Updated Dec 4, 2025Dec 4, 2025

• react-strict-dom

  Public

  facebook/react-strict-dom’s past year of commit activity
  React Strict DOM (RSD) standardizes the development of styled React components for web and native.

  JavaScript

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  MIT License

  •186•3.5k•44•18•Updated Dec 4, 2025Dec 4, 2025

• fb303

  Public

  facebook/fb303’s past year of commit activity
  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

  •59•85•6•12•Updated Dec 4, 2025Dec 4, 2025

• proxygen

  Public

  facebook/proxygen’s past year of commit activity
  A collection of C++ HTTP libraries including an easy to use HTTP server.

  C++

  •

  Other

  •1.5k•8.3k•22•11•Updated Dec 3, 2025Dec 3, 2025

• react-native-devtools-frontend

  Public

  facebook/react-native-devtools-frontend’s past year of commit activity
  The Chrome DevTools UI, customized for React Native

  TypeScript

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  Other

  •597•59•0•1•Updated Dec 3, 2025Dec 3, 2025