Phoenix is a modern open-source Code Editor for the web
Vampirio Code, a great Code Editor and Compiler
Apache NetBeans
Web IDE in single HTML file
A modern, lightweight yet powerful text editor
The professional, open source development tool for the open web
Light-weight Scintilla-based text editor with syntax highlighting
Cloud-based Integrated Development Enviroment
This is the Goliath Adaptive WEB Application Engine Documentation