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    151 repositories

    • pyre-check

      Public
      Performant type-checking for python.
      pythonsecuritytypecheckerstatic-analysisocamlcontrol-flow-analysiscode-qualityprogram-analysistaint-analysisabstract-interpretation
      OCaml
      •
      MIT License
      •452•7.1k•129•22•Updated Sep 9, 2025Sep 9, 2025

    • hhvm

      Public
      A virtual machine for executing programs written in Hack.
      hacklangphphackhhvm
      C++
      •
      Other
      •3.1k•18k•408•93•Updated Sep 9, 2025Sep 9, 2025

    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      •
      Apache License 2.0
      •624•2.6k•39•4•Updated Sep 9, 2025Sep 9, 2025

    • opaque-ke

      Public
      An implementation of the OPAQUE password-authenticated key exchange protocol
      Rust
      •
      Apache License 2.0
      •51•346•1•0•Updated Sep 9, 2025Sep 9, 2025

    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      •
      Apache License 2.0
      •5.8k•30k•296•105•Updated Sep 9, 2025Sep 9, 2025

    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      •
      Other
      •355•919•24•30•Updated Sep 9, 2025Sep 9, 2025

    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      •
      Other
      •1.5k•8.3k•20•7•Updated Sep 9, 2025Sep 9, 2025

    • facebook-java-business-sdk

      Public
      Java SDK for Meta Marketing APIs
      Java
      •
      Other
      •337•437•53•19•Updated Sep 9, 2025Sep 9, 2025

    • 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
      •54•55•5•22•Updated Sep 9, 2025Sep 9, 2025

    • openbmc

      Public
      OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).
      C
      •301•662•42•6•Updated Sep 9, 2025Sep 9, 2025

    • buck2

      Public
      Build system, successor to Buck
      Rust
      •
      Apache License 2.0
      •293•4.1k•255•26•Updated Sep 9, 2025Sep 9, 2025

    • stylex

      Public
      StyleX is the styling system for ambitious user interfaces.
      JavaScript
      •
      MIT License
      •339•8.7k•66•9•Updated Sep 9, 2025Sep 9, 2025

    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      •
      GNU General Public License v2.0
      •317•6.5k•219•37•Updated Sep 9, 2025Sep 9, 2025

    • capi-param-builder

      Public
      Conversions API parameter builder to help enhance the parameter qualities for Conversions API events
      Java
      •
      Other
      •2•0•1•0•Updated Sep 9, 2025Sep 9, 2025

    • Ax

      Public
      Adaptive Experimentation Platform
      Python
      •
      MIT License
      •346•2.6k•20•95•Updated Sep 9, 2025Sep 9, 2025

    • lexical

      Public
      Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
      TypeScript
      •
      MIT License
      •2k•22k•507•28•Updated Sep 9, 2025Sep 9, 2025

    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      OCaml
      •
      MIT License
      •1.9k•22k•623•14•Updated Sep 9, 2025Sep 9, 2025

    • pyrefly

      Public
      A fast type checker and IDE for Python
      pythonrusttypecheckertypeslanguage-serveridetypingcode-qualitytypechecktype-checker
      Rust
      •
      MIT License
      •148•3.6k•283•7•Updated Sep 9, 2025Sep 9, 2025

    • buck2-prelude

      Public
      Prelude for the Buck2 project
      Starlark
      •
      Apache License 2.0
      •51•58•1•1•Updated Sep 9, 2025Sep 9, 2025

    • relay

      Public
      Relay is a JavaScript framework for building data-driven React applications.
      Rust
      •
      MIT License
      •1.9k•19k•600•153•Updated Sep 9, 2025Sep 9, 2025

    • react

      Public
      The library for web and native user interfaces.
      reactjavascriptlibraryuifrontenddeclarative
      JavaScript
      •
      MIT License
      •49k•239k•814•232•Updated Sep 9, 2025Sep 9, 2025

    • hermes

      Public
      A JavaScript engine optimized for running React Native.
      C++
      •
      MIT License
      •707•10k•119•71•Updated Sep 8, 2025Sep 8, 2025

    • ktfmt

      Public
      A program that reformats Kotlin source code to comply with the common community standard for Kotlin code conventions.
      Kotlin
      •
      Apache License 2.0
      •86•1.1k•39•1•Updated Sep 8, 2025Sep 8, 2025

    • rocksdb

      Public
      A library that provides an embeddable, persistent key-value store for fast storage.
      storage-enginedatabase
      C++
      •
      GNU General Public License v2.0
      •6.6k•30k•773•497•Updated Sep 8, 2025Sep 8, 2025

    • dns

      Public
      Collection of Meta's DNS Libraries
      Go
      •
      Apache License 2.0
      •30•281•4•1•Updated Sep 8, 2025Sep 8, 2025

    • fresco

      Public
      An Android library for managing images and the memory they use.
      Java
      •
      MIT License
      •3.8k•17k•241•10•Updated Sep 8, 2025Sep 8, 2025

    • redex

      Public
      A bytecode optimizer for Android apps
      C++
      •
      MIT License
      •675•6.2k•56•17•Updated Sep 8, 2025Sep 8, 2025

    • react-native

      Public
      A framework for building native applications using React
      mobilecross-platformapp-frameworkmobile-developmentreactandroidiosreact-native
      C++
      •
      MIT License
      •25k•124k•658•327•Updated Sep 8, 2025Sep 8, 2025

    • 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 community.
      PHP
      •
      GNU General Public License v2.0
      •165•242•116•77•Updated Sep 8, 2025Sep 8, 2025

    • docusaurus

      Public
      Easy to maintain open source documentation websites.
      reactjavascriptopen-sourcewebsitedocumentationhacktoberfest
      TypeScript
      •
      MIT License
      •9.4k•62k•293•56•Updated Sep 8, 2025Sep 8, 2025