A lightweight compositor for X11
Create basic GUI windows for minimal Linux distros
The systemd system and service manager
X11 developer's 'workbench' and lightweight toolkit API
WYSIWIG conditional compilation preprocessor for Java etc.
Electronic design and programming tools suite like Eagle, MpLab
a very fast full system simulator
Convert C/S type software to B/S type webapp.
Ccide is a Decision Table preprocessor.
Script language for processing binary data