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    177 repositories

    • idb

      Public
      idb is a flexible command line interface for automating iOS simulators and devices
      Swift
      •
      MIT License
      •503•5.3k•170•12•Updated Sep 15, 2026Sep 15, 2026

    • astryx

      Public
      An open source design system that's fully customizable and agent ready
      TypeScript
      •
      MIT License
      •1.1k•13k•216•194•Updated Sep 15, 2026Sep 15, 2026

    • sapling

      Public
      A Scalable, User-Friendly Source Control System.
      Rust
      •
      GNU General Public License v2.0
      •398•7k•240•135•Updated Sep 15, 2026Sep 15, 2026

    • buck2

      Public
      Build system, successor to Buck
      Rust
      •
      Apache License 2.0
      •395•4.4k•297•97•Updated Sep 15, 2026Sep 15, 2026

    • lexical

      Public
      Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.
      TypeScript
      •
      MIT License
      •2.2k•24k•279•15•Updated Sep 15, 2026Sep 15, 2026

    • folly

      Public
      An open-source C++ library developed and used at Facebook.
      C++
      •
      Apache License 2.0
      •5.9k•31k•326•152•Updated Sep 15, 2026Sep 15, 2026

    • 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
      •68•98•6•12•Updated Sep 15, 2026Sep 15, 2026

    • buck2-prelude

      Public
      Prelude for the Buck2 project
      Starlark
      •
      Apache License 2.0
      •69•73•1•1•Updated Sep 15, 2026Sep 15, 2026

    • openzl

      Public
      A novel take on lossless data compression
      C++
      •
      Other
      •164•3.2k•34•42•Updated Sep 15, 2026Sep 15, 2026

    • time

      Public
      Meta's Time libraries
      Go
      •
      Apache License 2.0
      •89•651•1•0•Updated Sep 15, 2026Sep 15, 2026

    • fbthrift

      Public
      Facebook's branch of Apache Thrift, including a new C++ server.
      C++
      •
      Apache License 2.0
      •648•2.7k•47•10•Updated Sep 15, 2026Sep 15, 2026

    • hhvm

      Public
      A virtual machine for executing programs written in Hack.
      phphackhhvm
      phphackhhvmhacklang
      C++
      •
      Other
      •3.1k•19k•410•136•Updated Sep 15, 2026Sep 15, 2026

    • pyrefly

      Public
      A fast type checker and language server for Python
      pythonrusttypechecker
      pythonrusttypecheckertypeslanguage-serveridelanguage-server-protocoltypingvscode-extensioncode-quality
      Rust
      •
      MIT License
      •516•7k•552•172•Updated Sep 15, 2026Sep 15, 2026

    • Lifeguard

      Public
      Lifeguard is a static analyzer to detect Lazy Imports incompatibilities and ease the adoption overhead for Lazy Imports in Python
      pythonruststatic-analysis
      pythonruststatic-analysislazy-importspep810
      Python
      •
      MIT License
      •11•87•2•2•Updated Sep 15, 2026Sep 15, 2026

    • ocamlrep

      Public
      Sets of libraries and tools to write applications and libraries mixing OCaml and Rust. These libraries will help keeping your types and data structures synchron…
      Rust
      •
      MIT License
      •28•147•0•6•Updated Sep 15, 2026Sep 15, 2026

    • relay

      Public
      Relay is a JavaScript framework for building data-driven React applications.
      Rust
      •
      MIT License
      •1.9k•19k•636•225•Updated Sep 15, 2026Sep 15, 2026

    • buck2-shims-meta

      Public
      Shims to convert Meta internal buck2 macros/targets for open source build compatibility.
      Starlark
      •
      Apache License 2.0
      •9•6•0•1•Updated Sep 15, 2026Sep 15, 2026

    • dotslash

      Public
      Simplified executable deployment
      Rust
      •
      Apache License 2.0
      •75•905•21•7•Updated Sep 15, 2026Sep 15, 2026

    • watchman

      Public
      Watches files and records, or triggers actions, when they change.
      C++
      •
      MIT License
      •1.1k•14k•222•36•Updated Sep 15, 2026Sep 15, 2026

    • fboss

      Public
      Facebook Open Switching System Software for controlling network switches.
      C++
      •
      Other
      •409•990•25•184•Updated Sep 15, 2026Sep 15, 2026

    • rebalancer

      Public
      Rebalancer is a domain-specific language and tool for specifying and solving assignment problems (eg, putting balls in boxes with complex rules).
      C++
      •
      Apache License 2.0
      •5•22•0•3•Updated Sep 15, 2026Sep 15, 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
      •547•3.1k•34•14•Updated Sep 15, 2026Sep 15, 2026

    • openr

      Public
      Distributed platform for building autonomic network functions.
      C++
      •
      MIT License
      •254•938•11•10•Updated Sep 15, 2026Sep 15, 2026

    • mvfst

      Public
      An implementation of the QUIC transport protocol.
      C++
      •
      MIT License
      •293•1.7k•25•12•Updated Sep 15, 2026Sep 15, 2026

    • proxygen

      Public
      A collection of C++ HTTP libraries including an easy to use HTTP server.
      C++
      •
      Other
      •1.5k•8.4k•24•15•Updated Sep 15, 2026Sep 15, 2026

    • CacheLib

      Public
      Pluggable in-process caching engine to build and scale high performance services
      performancecppcache
      performancecppcacheconcurrencyssdcache-engine
      C++
      •
      Apache License 2.0
      •325•1.6k•0•20•Updated Sep 15, 2026Sep 15, 2026

    • BGP

      Public
      Meta's BGP (Border Gateway Protocol) routing daemon for large-scale data center networks, built as part of the FBOSS forwarding stack.
      C++
      •
      Apache License 2.0
      •5•15•0•1•Updated Sep 15, 2026Sep 15, 2026

    • flow

      Public
      Adds static typing to JavaScript to improve developer productivity and code quality.
      Rust
      •
      MIT License
      •1.9k•22k•510•6•Updated Sep 15, 2026Sep 15, 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
      •221•3.2k•0•0•Updated Sep 15, 2026Sep 15, 2026

    • facebook-for-woocommerce

      Public
      The official plugin from Meta. This repository is now officially owned by Meta's Partner Engineering team. We welcome and encourage contributions from the commu…
      PHP
      •
      GNU General Public License v2.0
      •194•263•103•141•Updated Sep 15, 2026Sep 15, 2026
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