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    152 repositories

    • buck2

      Public
      Build system, successor to Buck
      Rust
      •
      Apache License 2.0
      •299•4.1k•255•33•Updated Oct 4, 2025Oct 4, 2025

    • hhvm

      Public
      A virtual machine for executing programs written in Hack.
      hacklangphphackhhvm
      C++
      •
      Other
      •3.1k•19k•408•106•Updated Oct 4, 2025Oct 4, 2025

    • wangle

      Public
      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
      •546•3.1k•34•12•Updated Oct 4, 2025Oct 4, 2025

    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      •
      Apache License 2.0
      •5.8k•30k•300•109•Updated Oct 4, 2025Oct 4, 2025

    • starlark-rust

      Public
      A Rust implementation of the Starlark language
      Rust
      •
      Apache License 2.0
      •77•864•28•8•Updated Oct 4, 2025Oct 4, 2025

    • pyrefly

      Public
      A fast type checker and language server for Python
      pythonrusttypecheckertypeslanguage-serveridetypingcode-qualityhacktoberfesttypecheck
      Rust
      •
      MIT License
      •157•3.8k•332•12•Updated Oct 4, 2025Oct 4, 2025

    • mvfst

      Public
      An implementation of the QUIC transport protocol.
      C++
      •
      MIT License
      •274•1.6k•35•6•Updated Oct 4, 2025Oct 4, 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•31k•787•512•Updated Oct 4, 2025Oct 4, 2025

    • mariana-trench

      Public
      A security focused static analysis tool for Android and Java applications.
      C++
      •
      MIT License
      •153•1.2k•39•3•Updated Oct 4, 2025Oct 4, 2025

    • 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
      •301•663•42•6•Updated Oct 4, 2025Oct 4, 2025

    • openr

      Public
      Distributed platform for building autonomic network functions.
      C++
      •
      MIT License
      •245•920•10•8•Updated Oct 4, 2025Oct 4, 2025

    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      •
      GNU General Public License v2.0
      •319•6.6k•220•46•Updated Oct 4, 2025Oct 4, 2025

    • buck2-prelude

      Public
      Prelude for the Buck2 project
      Starlark
      •
      Apache License 2.0
      •51•58•1•1•Updated Oct 4, 2025Oct 4, 2025

    • igl

      Public
      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
      •197•3.1k•4•0•Updated Oct 3, 2025Oct 3, 2025

    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      •
      Other
      •353•923•24•39•Updated Oct 3, 2025Oct 3, 2025

    • capi-param-builder

      Public
      Conversions API parameter builder to help enhance the parameter qualities for Conversions API events
      PHP
      •
      Other
      •3•0•0•0•Updated Oct 3, 2025Oct 3, 2025

    • Ax

      Public
      Adaptive Experimentation Platform
      Python
      •
      MIT License
      •350•2.6k•21•92•Updated Oct 3, 2025Oct 3, 2025

    • CacheLib

      Public
      Pluggable in-process caching engine to build and scale high performance services
      cppcacheconcurrencyssdcache-engineperformance
      C++
      •
      Apache License 2.0
      •302•1.4k•14•19•Updated Oct 3, 2025Oct 3, 2025

    • kuduraft

      Public
      A Raft Library in C++ based on the Raft implementation in Apache Kudu
      C++
      •
      Apache License 2.0
      •660•137•0•0•Updated Oct 3, 2025Oct 3, 2025

    • react

      Public
      The library for web and native user interfaces.
      reactjavascriptlibraryuifrontenddeclarative
      JavaScript
      •
      MIT License
      •49k•239k•811•230•Updated Oct 3, 2025Oct 3, 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
      •169•243•118•83•Updated Oct 3, 2025Oct 3, 2025

    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      •
      Apache License 2.0
      •627•2.7k•41•4•Updated Oct 3, 2025Oct 3, 2025

    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      •
      Other
      •1.5k•8.3k•20•10•Updated Oct 3, 2025Oct 3, 2025

    • hermes

      Public
      A JavaScript engine optimized for running React Native.
      C++
      •
      MIT License
      •713•11k•117•70•Updated Oct 3, 2025Oct 3, 2025

    • SoLoader

      Public
      Native code loader for Android
      Java
      •
      Apache License 2.0
      •183•1.4k•37•3•Updated Oct 3, 2025Oct 3, 2025

    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      OCaml
      •
      MIT License
      •1.9k•22k•618•15•Updated Oct 3, 2025Oct 3, 2025

    • react-native

      Public
      A framework for building native applications using React
      mobilecross-platformapp-frameworkmobile-developmentreactandroidiosreact-native
      C++
      •
      MIT License
      •25k•124k•666•386•Updated Oct 3, 2025Oct 3, 2025

    • watchman

      Public
      Watches files and records, or triggers actions, when they change.
      C++
      •
      MIT License
      •1k•13k•214•40•Updated Oct 3, 2025Oct 3, 2025

    • 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•84•6•12•Updated Oct 3, 2025Oct 3, 2025

    • IT-CPE

      Public
      Meta's Client Platform Engineering tools. Some of the tools we have written to help manage our fleet of client systems.
      Ruby
      •
      Apache License 2.0
      •117•570•6•12•Updated Oct 3, 2025Oct 3, 2025