Zoomable user interface (ZUI) with file manager, file viewers and more
TX Library is a tiny graphics library for Win32 written in C++.
GNAVI: The GNU Ada Visual Interface.
A canvas library for generating technical drawings
Dynamic Extension for TCL/TK
A small C library for building user interfaces with C, XML and CSS.
Qt bindings for Java developers
uil The User Interface Library
Renderer for subtitle format SSB.
A GUI based on libSDL for C++ applications
OpenGL GUI and build-in data management API
Evolving Artificial Life
Apache Cayenne, Wicket, CXF, GWT, EJB examples as a framework