Another drawing editor for LaTeX with PSTricks & TikZ
Tool support for the Z formal notation
GUI designer for wxWidgets
Drawing, graphics conversion, software development, administration.
Create basic GUI windows for minimal Linux distros
Vector drawing program for LaTeX using PSTricks
XGAP is a PHP web application generator
Electronic design and programming tools suite like Eagle, MpLab
A layout and widget editor for Wt (C++ web applications)
Community Supported Eclipse Visual Editor