LibCXX Widget Toolkit 0.31.0 LibCXXW is a library that implements a basic X user interface widget toolkit with a modern C++20 API. Rapicorn 17.0.0 Rapicorn is a graphical user interface toolkit for rapid development of user interfaces for C++11 and Python development. The source code is released as Free Software and everybody is welcome to contribute ideas, code, wiki contributions and artwork.