header-only

JSON for Modern C++

Fast C++ logging library.

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

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

A single-header ANSI C immediate mode cross-platform GUI library

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

✔️The smallest header-only GUI library(4 KLOC) for all platforms

The fastest feature-rich C++11/14/17/20/23 single-header testing framework

Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code

A Fast and Easy to use microframework for the web.

A curated list of awesome header-only C++ libraries

Compile Time Regular Expression in C++

Activity Indicators for Modern C++

Argument Parser for Modern C++

Proxy: Next Generation Polymorphism in C++

Portable, simple and extensible C++ logging library

The missing CMake project initializer

Functional Programming Library for C++. Write concise and readable C++ code.

Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum

Header-only C++ binding for libzmq