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    161 repositories

    • stylex

      Public
      StyleX is the styling system for ambitious user interfaces.
      JavaScript
      •
      MIT License
      •386•9.1k•93•25•Updated Feb 3, 2026Feb 3, 2026

    • openr

      Public
      Distributed platform for building autonomic network functions.
      C++
      •
      MIT License
      •246•927•10•10•Updated Feb 3, 2026Feb 3, 2026

    • hhvm

      Public
      A virtual machine for executing programs written in Hack.
      phphackhhvmhacklang
      C++
      •
      Other
      •3.1k•19k•409•115•Updated Feb 3, 2026Feb 3, 2026

    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      •
      Apache License 2.0
      •627•2.7k•44•6•Updated Feb 3, 2026Feb 3, 2026

    • buck2

      Public
      Build system, successor to Buck
      Rust
      •
      Apache License 2.0
      •324•4.2k•274•68•Updated Feb 3, 2026Feb 3, 2026

    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      •
      Apache License 2.0
      •5.8k•30k•313•133•Updated Feb 3, 2026Feb 3, 2026

    • buck2-prelude

      Public
      Prelude for the Buck2 project
      Starlark
      •
      Apache License 2.0
      •60•60•1•1•Updated Feb 3, 2026Feb 3, 2026

    • pyrefly

      Public
      A fast type checker and language server for Python
      pythonrusttypecheckertypeslanguage-serveridetypingcode-qualityhacktoberfesttypecheck
      Rust
      •
      MIT License
      •264•5.3k•374•61•Updated Feb 3, 2026Feb 3, 2026

    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      •
      Other
      •377•950•25•129•Updated Feb 3, 2026Feb 3, 2026

    • redex

      Public
      A bytecode optimizer for Android apps
      C++
      •
      MIT License
      •681•6.3k•56•17•Updated Feb 3, 2026Feb 3, 2026

    • relay

      Public
      Relay is a JavaScript framework for building data-driven React applications.
      Rust
      •
      MIT License
      •1.9k•19k•621•184•Updated Feb 3, 2026Feb 3, 2026

    • react-native-website

      Public
      The React Native website and docs
      reactreact-nativedocusaurus
      TypeScript
      •
      MIT License
      •5.8k•2.1k•13•95•Updated Feb 3, 2026Feb 3, 2026

    • rocksdb

      Public
      A library that provides an embeddable, persistent key-value store for fast storage.
      databasestorage-engine
      C++
      •
      GNU General Public License v2.0
      •6.7k•31k•835•562•Updated Feb 3, 2026Feb 3, 2026

    • 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
      •300•670•43•7•Updated Feb 3, 2026Feb 3, 2026

    • Rapid

      Public
      The OpenStreetMap editor driven by open data, AI, and supercharged features
      JavaScript
      •
      ISC License
      •118•612•293•14•Updated Feb 3, 2026Feb 3, 2026

    • starlark-rust

      Public
      A Rust implementation of the Starlark language
      Rust
      •
      Apache License 2.0
      •86•923•30•22•Updated Feb 3, 2026Feb 3, 2026

    • kuduraft

      Public
      A Raft Library in C++ based on the Raft implementation in Apache Kudu
      C++
      •
      Apache License 2.0
      •663•143•0•0•Updated Feb 3, 2026Feb 3, 2026

    • bunnylol.rs

      Public
      bunnylol is a tool for writing smart bookmarks. Use in your browser, or on the command-line
      rustbrowserbookmarksbunnylol
      Rust
      •
      MIT License
      •23•109•1•2•Updated Feb 3, 2026Feb 3, 2026

    • Ax

      Public
      Adaptive Experimentation Platform
      Python
      •
      MIT License
      •358•2.7k•37•133•Updated Feb 3, 2026Feb 3, 2026

    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      •
      GNU General Public License v2.0
      •337•6.7k•231•62•Updated Feb 3, 2026Feb 3, 2026

    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      OCaml
      •
      MIT License
      •1.9k•22k•604•14•Updated Feb 3, 2026Feb 3, 2026

    • 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…
      C++
      •
      Other
      •206•3.2k•4•6•Updated Feb 3, 2026Feb 3, 2026

    • lexical

      Public
      Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
      TypeScript
      •
      MIT License
      •2.1k•23k•546•42•Updated Feb 3, 2026Feb 3, 2026

    • watchman

      Public
      Watches files and records, or triggers actions, when they change.
      C++
      •
      MIT License
      •1.1k•13k•210•29•Updated Feb 3, 2026Feb 3, 2026

    • pyre-check

      Public
      Performant type-checking for python.
      pythonsecuritytypecheckerstatic-analysisocamlcontrol-flow-analysiscode-qualityprogram-analysistaint-analysisabstract-interpretation
      OCaml
      •
      MIT License
      •451•7.1k•131•21•Updated Feb 3, 2026Feb 3, 2026

    • hermes

      Public
      A JavaScript engine optimized for running React Native.
      JavaScript
      •
      MIT License
      •732•11k•119•58•Updated Feb 3, 2026Feb 3, 2026

    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      •
      Other
      •1.5k•8.3k•22•15•Updated Feb 3, 2026Feb 3, 2026

    • ThreatExchange

      Public
      Trust & Safety tools for working together to fight digital harms.
      hashingimagevideoperceptual-hashingimage-hashingvideo-hashingimage-similaritythreatexchangencmecvideo-similarity
      C++
      •
      Other
      •346•1.3k•57•4•Updated Feb 3, 2026Feb 3, 2026

    • 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 Feb 3, 2026Feb 3, 2026

    • mvfst

      Public
      An implementation of the QUIC transport protocol.
      C++
      •
      MIT License
      •278•1.6k•39•6•Updated Feb 3, 2026Feb 3, 2026