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    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      3226.6k22346Updated Oct 29, 2025Oct 29, 2025
    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      3579242554Updated Oct 29, 2025Oct 29, 2025
    • hhvm

      Public
      A virtual machine for executing programs written in Hack.
      C++
      3.1k19k40796Updated Oct 29, 2025Oct 29, 2025
    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      5.8k30k301111Updated Oct 29, 2025Oct 29, 2025
    • redex

      Public
      A bytecode optimizer for Android apps
      C++
      6756.2k5617Updated Oct 29, 2025Oct 29, 2025
    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      OCaml
      1.9k22k61815Updated Oct 29, 2025Oct 29, 2025
    • pyrefly

      Public
      A fast type checker and language server for Python
      Rust
      1654.1k35916Updated Oct 29, 2025Oct 29, 2025
    • dotslash

      Public
      Simplified executable deployment
      Rust
      39766154Updated Oct 29, 2025Oct 29, 2025
    • openbmc

      Public
      OpenBMC is an open software framework to build a complete Linux image for a Board Management Controller (BMC).
      C
      303665436Updated Oct 29, 2025Oct 29, 2025
    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      1.5k8.3k2110Updated Oct 29, 2025Oct 29, 2025
    • lexical

      Public
      Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
      TypeScript
      2k22k52027Updated Oct 29, 2025Oct 29, 2025
    • buck2

      Public
      Build system, successor to Buck
      Rust
      3014.1k26136Updated Oct 29, 2025Oct 29, 2025
    • mvfst

      Public
      An implementation of the QUIC transport protocol.
      C++
      2761.6k365Updated Oct 29, 2025Oct 29, 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++
      1973.1k51Updated Oct 29, 2025Oct 29, 2025
    • Prelude for the Buck2 project
      Starlark
      525911Updated Oct 29, 2025Oct 29, 2025
    • A framework for building native applications using React
      C++
      25k124k685400Updated Oct 29, 2025Oct 29, 2025
    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      6282.7k424Updated Oct 29, 2025Oct 29, 2025
    • fresco

      Public
      An Android library for managing images and the memory they use.
      Java
      3.8k17k24211Updated Oct 29, 2025Oct 29, 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
      545857Updated Oct 29, 2025Oct 29, 2025
    • openzl

      Public
      A novel data compression framework
      C
      1042.6k2925Updated Oct 29, 2025Oct 29, 2025
    • stylex

      Public
      StyleX is the styling system for ambitious user interfaces.
      JavaScript
      3498.8k7217Updated Oct 28, 2025Oct 28, 2025
    • react

      Public
      The library for web and native user interfaces.
      JavaScript
      50k240k814228Updated Oct 28, 2025Oct 28, 2025
    • openr

      Public
      Distributed platform for building autonomic network functions.
      C++
      245920119Updated Oct 28, 2025Oct 28, 2025
    • hermes

      Public
      A JavaScript engine optimized for running React Native.
      C++
      71411k11873Updated Oct 28, 2025Oct 28, 2025
    • watchman

      Public
      Watches files and records, or triggers actions, when they change.
      C++
      1k13k21640Updated Oct 28, 2025Oct 28, 2025
    • relay

      Public
      Relay is a JavaScript framework for building data-driven React applications.
      Rust
      1.9k19k614157Updated Oct 28, 2025Oct 28, 2025
    • mcrouter

      Public
      Mcrouter is a memcached protocol router for scaling memcached deployments.
      C++
      5503.3k9720Updated Oct 28, 2025Oct 28, 2025
    • rocksdb

      Public
      A library that provides an embeddable, persistent key-value store for fast storage.
      C++
      6.6k31k794521Updated Oct 28, 2025Oct 28, 2025
    • FAI-PEP

      Public
      Facebook AI Performance Evaluation Platform
      Python
      883921134Updated Oct 28, 2025Oct 28, 2025
    • Ax

      Public
      Adaptive Experimentation Platform
      Python
      3492.6k2189Updated Oct 28, 2025Oct 28, 2025