Repositories list

• Ax

  Public

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

  Python

  •

  MIT License

  •354•2.6k•24•110•Updated Nov 24, 2025Nov 24, 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•407•111•Updated Nov 24, 2025Nov 24, 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

  •356•8.9k•69•19•Updated Nov 24, 2025Nov 24, 2025

• fboss

  Public
  Facebook Open Switching System Software for controlling network switches.

  C++

  •

  Other

  •362•931•25•63•Updated Nov 24, 2025Nov 24, 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•303•112•Updated Nov 24, 2025Nov 24, 2025

• zstd

  Public

  facebook/zstd’s past year of commit activity
  Zstandard - Fast real-time compression algorithm

  C

  •

  Other

  •2.3k•26k•200•30•Updated Nov 24, 2025Nov 24, 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

  •177•242•72•101•Updated Nov 24, 2025Nov 24, 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

  •452•7.1k•131•25•Updated Nov 24, 2025Nov 24, 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•525•33•Updated Nov 24, 2025Nov 24, 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

  •659•140•0•0•Updated Nov 24, 2025Nov 24, 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

  •

  MIT License

  •185•3.5k•43•14•Updated Nov 24, 2025Nov 24, 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

  •625•2.7k•44•5•Updated Nov 24, 2025Nov 24, 2025

• buck2

  Public

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

  Rust

  •

  Apache License 2.0

  •305•4.1k•267•38•Updated Nov 24, 2025Nov 24, 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

  •324•6.6k•226•50•Updated Nov 24, 2025Nov 24, 2025

• litho

  Public

  facebook/litho’s past year of commit activity
  A declarative framework for building efficient UIs on Android.

  Kotlin

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  Apache License 2.0

  •769•7.8k•57•51•Updated Nov 24, 2025Nov 24, 2025

• 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

  •

  MIT License

  •203•4.7k•383•29•Updated Nov 23, 2025Nov 23, 2025

• hermes

  Public

  facebook/hermes’s past year of commit activity
  A JavaScript engine optimized for running React Native.

  C++

  •

  MIT License

  •716•11k•120•77•Updated Nov 23, 2025Nov 23, 2025

• react-native

  Public

  facebook/react-native’s past year of commit activity
  A framework for building native applications using React

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

  C++

  •

  MIT License

  •25k•125k•704•409•Updated Nov 23, 2025Nov 23, 2025

• watchman

  Public

  facebook/watchman’s past year of commit activity
  Watches files and records, or triggers actions, when they change.

  C++

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  MIT License

  •1k•13k•210•20•Updated Nov 23, 2025Nov 23, 2025

• CacheLib

  Public

  facebook/CacheLib’s past year of commit activity
  Pluggable in-process caching engine to build and scale high performance services

  performancecppcache+ 3concurrencyssdcache-engine

  C++

  •

  Apache License 2.0

  •305•1.5k•15•19•Updated Nov 23, 2025Nov 23, 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 Nov 23, 2025Nov 23, 2025

• openr

  Public

  facebook/openr’s past year of commit activity
  Distributed platform for building autonomic network functions.

  C++

  •

  MIT License

  •245•925•11•9•Updated Nov 23, 2025Nov 23, 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

  •60•85•6•12•Updated Nov 23, 2025Nov 23, 2025

• wangle

  Public

  facebook/wangle’s past year of commit activity
  Wangle is a framework providing a set of common client/server abstractions for building services in a consistent, modular, and composable way.

  C++

  •

  Apache License 2.0

  •548•3.1k•34•11•Updated Nov 23, 2025Nov 23, 2025

• mvfst

  Public

  facebook/mvfst’s past year of commit activity
  An implementation of the QUIC transport protocol.

  C++

  •

  MIT License

  •275•1.6k•37•5•Updated Nov 23, 2025Nov 23, 2025

• openzl

  Public

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

  C

  •

  Other

  •109•2.8k•32•20•Updated Nov 23, 2025Nov 23, 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

  •301•665•43•6•Updated Nov 22, 2025Nov 22, 2025

• starlark-rust

  Public

  facebook/starlark-rust’s past year of commit activity
  A Rust implementation of the Starlark language

  Rust

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  Apache License 2.0

  •82•885•30•11•Updated Nov 22, 2025Nov 22, 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•242•11•Updated Nov 22, 2025Nov 22, 2025

• dotslash

  Public

  facebook/dotslash’s past year of commit activity
  Simplified executable deployment

  Rust

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  Apache License 2.0

  •43•772•15•3•Updated Nov 22, 2025Nov 22, 2025