The latest summary in 2021, recommended c/c++ open source frameworks and libraries. Continuously updated.
frame
Apache C++ Standard Library: is a collection of algorithms, containers, iterators and other basic components
ASL: Adobe Source Code Library provides a peer-reviewed and portable C++ source code library.
Boost: A large collection of general-purpose C++ libraries.
BDE: Development environment from Bloomberg Information Labs.
Cinder: An open source development community that provides professional-quality creative coding.
Bxxomfort: A lightweight, header-only library that ports some of the new features of C++11 to C++03.
Dlib: A universal cross-platform C++ library designed using contract programming and modern C++ technology.
EASTL: EA-STL public part
ffead-cpp: Enterprise application development framework
Folly: An open source C++ library developed and used by Facebook.
JUCE: A comprehensive C++ library for developing cross-platform software
libphenom: An event framework for building high-performance and highly scalable systems.
LibSourcey: C++11 evented IO for real-time video streaming and high-performance network applications
LibU: A multi-platform tool library written in C language
Loki: The design of a C++ library, including implementation of common design patterns and idioms.
MiLi: A small header-only C++ library
openFrameworks: Develop C++ toolkit for creative coding.
Qt: Cross-platform application and user interface framework
Reason: A cross-platform framework that makes it easier for developers to use Java, .Net and Python, while also meeting their needs for the performance and advantages of C++.
ROOT: A set of object-oriented frameworks with all the functionality to process and analyze large amounts of data very efficiently, used by CERN.
STLport: is a representative version of STL
STXXL: Standard template library for additional large data sets.
Ultimate++: C++ cross-platform rapid application development framework
Windows Template Library : C++ library for developing Windows applications and UI components
Yomm11: Open multi-methods for C++11.
Asynchronous event loop
Boost.Asio: Cross-platform C++ library for network and low-level I/O programming.
libev: Full-featured, high-performance time loop, slightly modeled after libevent, but no longer has the same limitations as libevent, and some of its bugs have been fixed.
libevent: event notification library
libuv: Cross-platform asynchronous I/O.
libco: coroutine, WeChat’s underlying IO library that supports 800 million users online at the same time. Powerful
ntyco: A pure C version of the coroutine framework, the code is short and concise, suitable for embedded projects.
libgo: Golang-style concurrency framework, C++11 implementation coroutine library
network library
ACE: C++ Object-Oriented Networking Toolkit
Casablanca: C++ REST SDK
cpp-netlib: A collection of open source libraries for advanced network programming
Dyad.c: Asynchronous networking in C
libCurl: multi-protocol file transfer library
Mongoose: Very lightweight web server
Muduo: C++ non-blocking network library for Linux multi-threaded servers
net_skeleton: TCP client/server library for C/C++
WAFer: Ultra-lightweight C-based software platform for scalable server-side and web applications. For C programmers, consider node.js
Onion: C language HTTP server library, designed to be lightweight and easy to use.
POCO: C++ class library for building network and Internet-based applications that can run on desktop, server, mobile and embedded systems.
RakNet: A cross-platform, open source C++ network engine for game developers.
Tufao: An asynchronous web framework built in C++ on top of Qt.
WebSocket++: websocket client/server library based on C++/Boost Aiso
ZeroMQ: High-speed, modular asynchronous communication library
TCP/IP protocol stack
f-stack: Tencent’s open source protocol stack, a high-performance user-mode protocol stack based on DPDK.
NtyTcp: Single-threaded protocol stack, based on netmap, DPDK, rawSocket implementation.
LWIP: A streamlined version of the TCP/IP protocol stack implementation for the RAM platform.
mTCP: A highly scalable user-space TCP/IP protocol stack for multi-core systems.
4.4BSD: * The nix protocol stack is derived from 4.4BSD.
WEB application framework
Nginx: A high-performance HTTP and reverse proxy web server that also provides IMAP/POP3/SMTP services.
Lighttpd: An open source web server software that is secure, fast, compliant with industry standards, highly adaptable and optimized for high-configuration environments.
Libmicrohttpd: A simple c library web server under GNU software. The API is simple and fast.
shttpd: Mongoose-based web server framework.
CivetWeb: Provides an easy-to-use, powerful, C/C++ embedded web server with optional CGI, SSL and Lua support.
CppCMS: Free high-performance web development framework (not a CMS).
Crow: A C++ micro web framework (inspired by Python Flask)
Kore: Ultra-fast and flexible web server/framework for web applications developed in C.
libOnion: A lightweight library that helps you create web servers using the C programming language.
QDjango: A web framework written in C++ and based on the Qt library, trying to emulate the Django API, hence the name.
Wt: C++ library for developing web applications.
Standard library, algorithms and functions
C++ Standard Library: It is a collection of classes and functions written in the core language and is part of the C++ ISO standard itself.
Standard Template Library: Standard Template Library, STL
C POSIX library: C standard library specification for POSIX systems
ISO C++ Standards Committee : C++ Standards Committee
audio library
FMOD: Easy-to-use cross-platform audio engine and audio content game creation tool.
Maximilian: C++ audio and music digital signal processing library
OpenAL: Open source audio library—cross-platform audio API
Opus: a completely open, royalty-free, highly versatile audio codec
Speex: Free codec, deprecated by Opus
Tonic: Easy-to-use and efficient audio synthesis in C++
Vorbis: Ogg Vorbis is a completely open, non-proprietary, royalty-free universal compressed audio format.
ecology
lisequence : A C++ library for representing and analyzing population genetics data.
SeqAn: Focuses on algorithms and data structures for sequence analysis of biological data.
Vcflib: C++ library for parsing and processing VCF files
Wham: Apply association testing directly to genetic structural variants in BAM files.
compression
bzip2 : A completely free, patent-free and high-quality data compression
doboz: compression library for fast decompression
PhysicsFS: A library that provides abstract access to various archives, mainly used in video games. The design was partly inspired by Quake3's file subsystem.
KArchive: A library for creating, reading, writing, and manipulating file archives (such as zip and tar), which provides transparent compression and decompression of data using the gzip format through a series of subclasses of QIODevice.
LZ4: Very fast compression algorithm
LZHAM: Lossless compression database, the compression ratio is close to LZMA, but the decompression speed is much faster.
LZMA: The default and common compression method for the 7z format.
LZMAT: and its fast real-time lossless data compression library
miniz: A single C source file, compression/expansion compression library, using zlib compatible API, ZIP archive reading and writing, PNG writing method.
Minizip: Zlib's latest bug fix, supports PKWARE disk spanning, AES encryption and IO buffering.
Snappy: fast compression and decompression
ZLib: Very compact data stream compression library
ZZIPlib: Provides read access to ZIP archives.
Concurrency
Boost.Compute: C++ GPU computing library for OpenCL
Bolt: A C++ template library optimized for GPUs
C++React: Reactive programming library for C++11
Intel TBB: Intel Threading Building Blocks
Libclsph: GPU-accelerated SPH fluid simulation library based on OpenCL
OpenCL: An open standard for parallel programming of heterogeneous systems
OpenMP: OpenMP API
Thrust: a parallel algorithm library similar to the C++ Standard Template Library
HPX: A universal C++ runtime system for parallel and distributed applications of any size
VexCL: C++ vector expression template library for OpenCL/CUDA.
cryptography
Bcrypt: A cross-platform file encryption tool, encrypted files are portable to all supported operating systems and processors.
BeeCrypt: A fast encryption graphics library with powerful functions and convenient interface.
Botan: C++ encryption library
Crypto++ : A free C++ library for encryption schemes
GnuPG: A complete implementation of the OpenPGP standard
GnuTLS: Secure communication library that implements SSL, TLS and DTLS protocols
Libgcrypt: GnuPG-based encryption graphics library.
Libmcrypt: Thread-safe, providing a unified API.
LibreSSL: Free SSL/TLS protocol, a fork of 2014 OpenSSL
LibTomCrypt: A very comprehensive, modular, and portable encryption tool
libsodium: NaCI-based encryption library, opinionated and easy to use
Nettle: the underlying encryption library
OpenSSL: A powerful, commercial, full-featured, open source encryption library.
Tiny AES128 in C: A small, portable implementation of the AES128ESB encryption algorithm implemented in C
database
hiberlite: C++ object-relational mapping for Sqlite3
hiredis : A very simple C client library for Redis database
LevelDB: fast key-value store
LMDB: an embedded key-value store that conforms to the four basic elements of a database
MySQL++ : A C++ wrapper that encapsulates the C API of MySql
RocksDB: Fast storage of embedded key-values from Facebook
SQLite : A fully embedded, full-featured relational database that is only a few hundred KB and can be included correctly into your project.
Redis: An open source log-type, Key-Value database written in ANSI C language, complying with the BSD protocol, supporting the network, and can be memory-based and persistent.
MongoDB: a database based on distributed file storage
debug
Boost.Test: Boost testing library
Catch: A very stylish, C++ native framework that only contains header files for unit testing, test-driven development and behavior-driven development.
CppUnit: C++ testing framework ported from JUnit
CTest: CMake test driver
GoogleTest: Google C++ testing framework
ig-debugheap: Multi-platform debug heap for tracking memory errors
libtap: writing tests in C
MemTrack: for tracking memory allocations in C++
MicroProfile: Cross-platform network attempt profiler
minUnit: A mini unit testing framework written in C, using only two macros
Remotery: a single C file parser for web views
UnitTest++: lightweight C++ unit testing framework
container
C++ B-Tree: A template library that implements command memory containers based on the B-tree data structure
Hashmaps: Implementation of the Open Addressed Hash Table Algorithm in C++
game engine
Cocos2d-x: A cross-platform framework for building 2D games, interactive books, presentations and other graphics applications.
Grit: A community project to build a free game engine for open-world 3D games.
lrrlicht: an open source high-performance real-time #D engine written in C++ language
PolyCode: An open source framework for creating games implemented in C++ (bundled with Lua).
graphics library
bgfx: cross-platform rendering library
Cairo: 2D graphics library supporting multiple output devices
Horde3D: A small 3D rendering and animation engine
magnum: C++11 and OpenGL 2D/3D graphics engine
Ogre 3D: A scene-oriented, real-time, flexible 3D rendering engine written in C++ (not a game engine)
OpenSceneGraph: High-performance open source 3D graphics toolkit
Panda3D: Framework for 3D rendering and game development, written in Python and C++.
Skia: A complete 2D graphics library for drawing text, graphics and images
urho3d: Cross-platform rendering and game engine.
image processing
Boost.GIL: General image library
CImg: A small open source C++ toolkit for image processing
FreeImage: An open source library that supports common image formats and other formats required by today's multimedia applications.
GDCM: Grassroots DICOM library
ITK: Cross-platform open source image analysis system
Magick++: C++ interface to the ImageMagick program
OpenCV: Open source computer vision library
tesseract-ocr: OCR engine
VIGRA: General-purpose C++ computer vision library for image analysis
VTK: Open source free software system for 3D computer graphics, image processing and visualization.
internationalization
gettext : GNU gettext
IBM ICU: C, C++ and Java libraries providing Unicode and globalization support
libiconv: encoding conversion library between different character encodings
Json library
frozen: Jason parsing generator for C/C++
Jansson: C language library for encoding, decoding and processing Jason data
jbson: A library for building and iterating BSON data, and Json documents in C++14
JeayeSON: A very robust C++ JSON library that only contains header files
JSON++ : C++ JSON parser
json-parser : JSON parser written in portable ANSI C with very low memory footprint
json11 : A mini C++11 JSON library
jute : Very simple C++ JSON parser
ibjson: JSON parsing and printing library in C, easily integrated with any model
libjson: lightweight JSON library
PicoJSON: JSON parsing and serialization in C++, including only header files
Qt-Json: A simple class for parsing between JSON data and QVariant hierarchies
QJson : Qt-based library for mapping JSON data to QVariant objects
RepidJSON: A fast JSON parsing generator for C++, including SAX and DOM style APIs
YAJL: Fast streaming JSON parsing library in C language
log
Boost.Log: Designed to be very modular and extensible
easyloggingpp: C++ logging library, containing only a single header file.
Log4cpp: A series of C++ libraries that flexibly add logs to files, system logs, IDSA and other places.
templog : A lightweight C++ library that can add logging to your C++ applications
machine learning, artificial intelligence
btsk: Game behavior tree launcher tool
Evolving Objects: Template-based, ANSI C++ evolutionary computing library that can help you write your own stochastic optimization algorithms very quickly.
Caffe: a fast neural network framework
CCV: A modern computer vision library with C language as its core
mlpack: Extensible C++ machine learning library
OpenCV: Open source computer vision library
Recommender: A C language library for product recommendations/suggestions using collaborative filtering.
SHOGUN: Shogun machine learning tool
sofia-ml: A suite of fast incremental algorithms for machine learning
math library
Armadillo: A high-quality C++ linear algebra library that strikes a good balance between speed and ease of use. The syntax is very similar to MatlAB
blaze: High-performance C++ math library for dense and sparse algorithms.
ceres-solver: A C++ library from Google for modeling and solving large complex nonlinear least squares problems.
CGal: A collection of efficient and reliable set algorithms
CML: Free C++ math library for games and graphics
Eigen: A high-level C++ template header library covering linear algebra, matrix, vector operations, numerical solving and other related algorithms.
GMTL: Mathematical Graphics Template Library is a set of tools for implementing basic graphics extensively.
GMP: C/C++ library for high-precision calculations, handling signed integers, rational numbers and floating point numbers.
multimedia library
GStreamer: A library for building graphs of media processing components
LIVE555 Streaming Media: Multimedia streaming library using open standard protocols (RTP/RTCP, RTSP, SIP)
libVLC: libVLC (VLC SDK) media framework
QtAV: A multimedia playback framework based on Qt and FFmpeg that can help you easily write a player
SDL: Simple direct control of the media layer
SFML: Fast, simple multimedia library
physics
Box2D: 2D game physics engine.
Bullet: 3D game physics engine.
Chipmunk: Fast, lightweight 2D game physics library
LiquidFun: 2D game physics engine
ODE: Open Dynamics Engine - an open source, high-performance library for simulating rigid body dynamics.
ofxBox2D: Box2D open source framework wrapper.
Simbody: A high-performance C++ multibody dynamics/physics library for simulating joint biomechanics and mechanical systems like vehicles, robots, and human skeletons.
Robotics
MOOS-Ivp: A set of open source C++ modules that provide autonomy for robotic platforms, specifically autonomous marine vehicles.
MRPT: Mobile Robot Programming Toolkit
PCL: Point Cloud Library is an independent, large-scale open project for 2D/3D image and point cloud processing.
Robotics Library: A stand-alone C++ library including robot dynamics, motion planning and control.
RobWork: A collection of C++ libraries for simulation and control of robotic systems.
ROS: Robot Operating System that provides libraries and tools to help software developers create robotic applications.
scientific computing
FFTW: C language library for calculating DFT in one or more dimensions.
GSL: GNU Scientific Library.
script
ChaiScript: An easy-to-use embedded scripting language for C++.
Lua: A small and fast scripting engine for configuration files and basic application scripts.
luacxx : C++11 API for creating Lua bindings
SWIG : A wrapper/interface generator that lets your C++ code link to JavaScript, Perl, PHP, Python, Tcl and Ruby
V7: Embedded JavaScript engine.
V8: Google's fast JavaScript engine that can be embedded into any C++ application.
serialization
Cap'n Proto: Fast data exchange format and RPC system.
cereal : C++11 serialization library
FlatBuffers: Memory-efficient serialization library
MessagePack: Efficient binary serialization library for C/C++, such as JSON
ProtoBuf: Protocol buffer, Google's data exchange format.
ProtoBuf-c: Protocol buffer implementation in C language
SimpleBinaryEncoding : Encoding and decoding of application information in binary format for low-latency applications.
Thrift: Efficient cross-language IPC/RPC, used in C++, Java, Python, PHP, C# and many other languages, originally developed by Facebook.
Video library
libvpx: VP8/VP9 encoding and decoding SDK
FFMpeg: A complete, cross-platform solution for recording, converting video and audio streams.
libde265: Open implementation of the h.265 video codec.
OpenH264: Open source H.364 codec.
Theora: Free and open source video compression format.
XML library
Expat: xml parsing library written in C language
LibXml2: xml C parser and toolkit for Gnome
LibXml++: xml parser for C++
PugiXML: A lightweight, simple and fast XML parser for C++ that supports XPath.
RapidXML: Attempts to create the fastest XML parser while maintaining ease of use, portability, and reasonable W3C compatibility.
TinyXML: A simple and small C++ XML parser that can be easily integrated into other projects.
TinyXML2: A simple and fast C++ CML parser that can be easily integrated into other projects.
TinyXML++: A completely new interface to TinyXML that takes advantage of many of the advantages of C++, templates, exceptions and better exception handling.
Xerces-C++: XML validation parser written in a subset of portable C++.
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