GNAVI: The GNU Ada Visual Interface.
Zoomable user interface (ZUI) with file manager, file viewers and more
Perl extension for the GNU Readline/History Library
a CLI generator and and SW library
A small C library for building user interfaces with C, XML and CSS.
WinForms Controls & Docking Forms
Widgets library contains c++ classes of GUI widgets for WinAPI.
Qt bindings for Java developers
A GUI based on libSDL for C++ applications
OpenGL GUI and build-in data management API
Design text screen masks on your Commodore 64