An implementation of Org mode without the dependency of Emacs
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Personal teleprompter software for all video makers.
Symja - Java computer algebra language & symbolic math library
Web IDE in single HTML file
The Markdown-based note-taking app that doesn't suck
Tools for developing qooxdoo Web apps
HTML/CSS/JS and Markdown Playground For Web Designers and Developers