A modern formatting library

A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)

DOOM Open Source Release

A C++ header-only HTTP/HTTPS server and client library

Simple and Fast Multimedia Library

Crow is very fast and easy to use C++ micro web framework (inspired by Python Flask)

C++ Requests: Curl for People, a spiritual port of Python Requests.

A minimal, resource efficient unikernel for cloud services

Lightweight and modular C++11 graphics middleware for games and data visualization

Sol3 (sol2 v3.0) - a C++ <-> Lua API wrapper with advanced features and top notch performance - is here, and it's great! Documentation:

Parametric 2d/3d CAD

A date and time library based on the C++11/14/17 <chrono> header

Pattern-defeating quicksort.

Alternative rust compiler (re-implementation)

A modern port of Turbo Vision 2.0, the classical framework for text-based user interfaces. Now cross-platform and with Unicode support.

Parsing Expression Grammar Template Library

Library to parse and work with the C++ AST

Text-based desktop environment

unfork(2) is the inverse of fork(2). sort of.

A unit of time defined in C++.

C++11 port of docopt

A (work-in-progress) nextgen Doxygen for C++

Termcolor is a header-only C++ library for printing colored messages to the terminal. Written just for fun with a help of the Force.

Yet Another Serialization

Cross-platform C++ library to copy/paste clipboard content

C++ Library for pulling system and hardware information, without hitting the command line.

optional lite - A C++17-like optional, a nullable object for C++98, C++11 and later in a single-file header-only library

A C++ micro-benchmarking framework

A small platform independent library making it simple to create and stop new processes in C++, as well as writing to stdin and reading from stdout and stderr of a new process

Human-friendly unit testing for C++11