1. Catch2A 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)
2. TextflowcppA simple, single-header-only library, for wrapping text. In C++
3. ClaraA simple to use, composable, command line parser for C++ 11 and beyond