A free C, C++ and Fortran IDE
Cross-platform layout engine which implements Flexbox
Community-developed library for professional-quality creative coding
Graphical User Interface Toolkit for Python with minimal dependencies
inputbox password WIN OSX GTK QT Console VCPKG C# Lua R Fortran Pascal
Cross Platform GUI Toolkit
PHP bindings for the cross-platform GUI library wxWidgets.
Cross-platform C framework very compact libraries and tools.