clickTk is a graphical editor to generate Perl/Tk GUI.
Configurable Object Oriented Rapid Application Development system
Toolkit for rapid XML and web application development
C/C++ library to add light and intuitive GUI to OpenGL and DX programs
A Lua and XML Graphical User Interface
Qt chart widget.
Javascript library to create fully css styleable scrollbars
Binary releases of (Qt Python bindings) PyQt for Mac OS X
Select from over 100 HTML5 tags to insert into your content.
A visual markup editor that runs in a browser.
A C++ Implementation of the MIT OpenBlocks Java Code
ChumbOS Launcher - Native Application Launcher for Chumby