A list of open source C++ libraries

The objective of this page is to build a comprehensive list of open source C++ libraries, so that when one needs an implementation of particular functionality, he doesn't need to waste time searching on Google.

If you know a library that might be useful to others, please add a link to it here. There are no restrictions on what can be included except that the source of the library must be readily available to download.

The page is provided 'as is' - with the hope of being useful, but without any warranties. Outdated, misleading or wrong links might appear here. If you've noticed one of these, it would be great if you fixed the error.

[edit] Generic

Boost - large collection of generic libraries
BDE - The BDE Development Environment from Bloomberg L.P.
Dlib - networking, threads, graphical interfaces, data structures, linear algebra, machine learning, XML and text parsing, numerical optimization, Bayesian nets, and numerous other tasks
JUCE - An extensive, mature, cross-platform C++ toolkit
Loki - design patterns
Reason - xml, xpath, regex, threads, sockets, http, sql, date-time, streams, encoding and decoding, filesystem, compression
Yomm11 - Open multi-methods for C++11
Folly - Facebook Open-source LibrarY. Library of C++11 components designed with practicality and efficiency in mind.
cxxomfort - Backports of C++ features (C++11 to C++03 and C++1y proposals to C++11/C++03).
libsourcey - Cross-platform C++11 library for high speed networking and media encoding. HTTP, WebSockets, TURN, STUN, Symple and more...
Neu - C++11 framework for AI, networking and distributed objects, simulation and modeling, languages and compiler construction, concurrency, and more.

[edit] Communication

C++ RESTful framework - C++ micro-framework designed to be embedded into a wide range of applications.
C++ REST SDK - asynchronous HTTP client and listener, asynchronous Stream, URI, JSON
cpp-netlib - cpp-netlib: The C++ Network Library
Boost.Asio - asynchronous and synchronous networking, timers, serial I/O
POCO - networking: encryption, HTTP; Zip files
ACE - asynchronous networking, event demultiplexing, messaging, CORBA
wvstreams
gsoap
Unicomm - asynchronous networking, high-level TCP communication framework
restful_mapper - ORM for consuming RESTful JSON APIs in C++

[edit] Graphic user interface

GTK+

Qt

[edit] General Multimedia

[edit] Graphics

Plotting

plotutils

Formats

[edit] Audio

soundtouch

Fingerprinting

Formats

Tagging

CD

libkcompactdisc

[edit] Video

[edit] 3D Graphics

Ogre3D
OpenGL
GLEW OpenGL function loading
GLFW OpenGL window manager
assimp 3D model loading

[edit] Game Engine Architecture

EntityX
Anax

[edit] Internationalization

[edit] Math

Linear algebra

Graph theory

Class Library for Numbers

cln

Machine Learning

Computational geometry

[edit] Concurrency

Intel TBB
OpenMP
Thrust STL-like algorithms and data-structures for CUDA
ViennaCL Linear algebra and algorithms with OpenMP, CUDA, and OpenCL backends
VexCL C++ expression templates library for OpenCL and CUDA
Boost.Compute (unofficial) STL-like algorithms and data-structures for OpenCL
Boost.Interprocess
Boost.Thread
Boost.Atomic
Boost.Lockfree
Boost.MPI
Boost.Context
libopenmpi
libsimdpp
HPX A general purpose C++ runtime system for parallel and distributed applications of any scale

[edit] Containers

Boost.Any
Boost.Array
Boost.Bimap
Boost.Container
Boost.Fusion
Boost.Heap
Boost.Pointer Container
Boost.Tuple
Boost.Variant
cpp-btree - btree_map, btree_set, btree_multimap, btree_multiset.

[edit] Serialization

[edit] Testing

[edit] Benchmarking

Celero

[edit] XML

[edit] JSON

[edit] Web

[edit] GPS

gpsd

[edit] Databases

mysql++
libpqxx
sqlapi
brig
SOCI
DTL
sqlpp11
ODB - C++ Object-Relational Mapping (ORM)