Open source projects in C++

  • tensorflow/tensorflow

    An Open Source Machine Learning Framework for Everyone

    ☕C++   ★146562 stars   ⚠3809 open issues   ⚭54 contributors   ☯almost 5 years old  
  • atom/electron

    Build cross platform desktop apps with JavaScript, HTML, and CSS

    ☕C++   ★32348 stars   ⚠286 open issues   ⚭279 contributors   ☯over 7 years old  
  • nwjs/nw.js

    Call all Node.js modules directly from DOM/WebWorker and enable a new way of writing applications with all Web technologies.

    ☕C++   ★37038 stars   ⚠753 open issues   ⚭61 contributors   ☯almost 9 years old  
  • ncsoft/Unreal.js

    Unreal.js: Javascript runtime built for UnrealEngine 4

    ☕C++   ★2731 stars   ⚠111 open issues   ⚭4 contributors   ☯almost 5 years old  
  • dmlc/mxnet

    Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler; for Python, R, Julia, Scala, Go, Javascript and more

    ☕C++   ★12865 stars   ⚠753 open issues   ⚭82 contributors   ☯over 5 years old  
  • amplab/SparkNet

    Distributed Neural Networks for Spark

    ☕C++   ★601 stars   ⚠28 open issues   ⚭2 contributors   ☯almost 5 years old  
  • BVLC/caffe

    Caffe: a fast open framework for deep learning.

    ☕C++   ★30575 stars   ⚠1130 open issues   ⚭162 contributors   ☯about 7 years old  
  • google/protobuf

    Protocol Buffers - Google's data interchange format

    ☕C++   ★42854 stars   ⚠1134 open issues   ⚭115 contributors   ☯about 6 years old  
  • tesseract-ocr/tesseract

    Tesseract Open Source OCR Engine (main repository)

    ☕C++   ★35533 stars   ⚠301 open issues   ⚭24 contributors   ☯about 6 years old  
  • apple/swift

    The Swift Programming Language

    ☕C++   ★52483 stars   ⚠489 open issues   ⚭263 contributors   ☯almost 5 years old  
  • SwiftAndroid/swift

    Port of Apple's reference Swift toolchain to Android; doesn't quite work yet

    ☕C++   ★733 stars   ⚠2 open issues   ⚭261 contributors   ☯almost 5 years old  
  • rethinkdb/rethinkdb

    The open-source database for the realtime web.

    ☕C++   ★23799 stars   ⚠1410 open issues   ⚭101 contributors   ☯almost 8 years old  
  • openalpr/openalpr

    Automatic License Plate Recognition library

    ☕C++   ★9576 stars   ⚠466 open issues   ⚭26 contributors   ☯almost 7 years old  
  • cocos2d/cocos2d-x

    Cocos2d-x is a suite of open-source, cross-platform, game-development tools used by millions of developers all over the world.

    ☕C++   ★14515 stars   ⚠1466 open issues   ⚭366 contributors   ☯almost 10 years old  
  • google/googletest

    Googletest - Google Testing and Mocking Framework

    ☕C++   ★16141 stars   ⚠156 open issues   ⚭30 contributors   ☯about 5 years old  
  • bitcoin/bitcoin

    Bitcoin Core integration/staging tree

    ☕C++   ★44205 stars   ⚠942 open issues   ⚭337 contributors   ☯almost 10 years old  
  • tatsuhiro-t/aria2

    aria2 is a lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.

    ☕C++   ★2646 stars   ⚠142 open issues   ⚭23 contributors   ☯almost 10 years old  
  • baidu/galaxy

    Galaxy is a cluster management system.

    ☕C++   ★325 stars   ⚠18 open issues   ⚭16 contributors   ☯almost 6 years old  
  • Microsoft/GSL

    Guidelines Support Library

    ☕C++   ★4058 stars   ⚠83 open issues   ⚭30 contributors   ☯about 5 years old  
  • zneak/units-cxx14

    A header library for calculations with units

    ☕C++   ★30 stars   ⚠0 open issues   ⚭1 contributors   ☯almost 5 years old  
  • SFTtech/openage

    Free (as in freedom) open source clone of the Age of Empires II engine :rocket:

    ☕C++   ★9740 stars   ⚠247 open issues   ⚭69 contributors   ☯almost 7 years old  
  • miloyip/rapidjson

    A fast JSON parser/generator for C++ with both SAX/DOM style API

    ☕C++   ★9513 stars   ⚠434 open issues   ⚭36 contributors   ☯over 6 years old  
  • frewsxcv/afl.rs

    Fuzzing Rust code with american-fuzzy-lop

    ☕C++   ★581 stars   ⚠9 open issues   ⚭5 contributors   ☯over 5 years old  
  • mongodb/mongo

    The MongoDB Database

    ☕C++   ★18243 stars   ⚠46 open issues   ⚭238 contributors   ☯almost 12 years old  
  • AustinSpafford/sunset_leaf

    Internet-connected leaves that project sunsets on the ceiling.

    ☕C++   ★4 stars   ⚠0 open issues   ⚭1 contributors   ☯almost 5 years old  
  • esp8266/Arduino

    ESP8266 core for Arduino

    ☕C++   ★11602 stars   ⚠301 open issues   ⚭90 contributors   ☯over 5 years old  
  • PCSX2/pcsx2

    PCSX2 - The Playstation 2 Emulator

    ☕C++   ★4267 stars   ⚠568 open issues   ⚭69 contributors   ☯almost 7 years old  
  • open-source-parsers/jsoncpp

    A C++ library for interacting with JSON.

    ☕C++   ★4834 stars   ⚠45 open issues   ⚭64 contributors   ☯over 6 years old  
  • sqlitebrowser/sqlitebrowser

    Official home of the DB Browser for SQLite (DB4S) project. Previously known as "SQLite Database Browser" and "Database Browser for SQLite". Website at:

    ☕C++   ★13436 stars   ⚠386 open issues   ⚭38 contributors   ☯over 6 years old  
  • aseprite/aseprite

    Animated sprite editor & pixel art tool (Windows, macOS, Linux)

    ☕C++   ★2313 stars   ⚠587 open issues   ⚭23 contributors   ☯about 6 years old