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header-only

C++17 header only library for common cross-platform networking, sockets, ssl, threading, new language features, crypto, and serial i/o support.

Modern header-only web access for C++17

Low-level cross-platform header-only socket library in C.

A superior alternative to std::function and company

Doc Pages : https://egm-foss.gitlab.io/tnt/

A cutting-edge header-only utility library for C++ which extends the STL useful missing functionality.

C++11 header-only library for registration and management of link-time plug-ins.

A small C++17 library to parse and resolve URLs (or better: URIs).

msgpack de/serializer for C++20

A small C++ library for manipulating dates, header-only.