units

A lightweight compile-time, header-only, dimensional analysis and unit conversion library built on c++11 with no dependencies

StateMachine

A lightweight header only C++17 state machine library

Signal-Slot-Notify

A lightweight header-only, single file signal slot notification library built on c++98 with no dependencies

singleton

Improved singleton with several advantages like testable, constructor arguments ...

ConstexprString

A small single header file, macro-free, zero overhead, tested, c++14 library without dependencies for manipulating c-strings at compile-time.