Naja - a Cobra IDE

Features:

• Written in Cobra
• Standard Editor Support:
  • Highlighting
  • Code Folding (beta)
• Experimental Features
  • GUI Forms Designer, which generates Cobra code
  • Project Support

Anything listed as experimental shouldn't be relied upon, but may still be convenient to use. Anything listed as beta should be mostly reliable with fixes needed for particular scenarios.

 http://cobraide.codeplex.com/