Learn how easy it is to sync an existing GitHub or Google Code repo to a SourceForge project! See Demo
Erm... click Help, then Tutorial and you will find directions for building your own ready-made simple editor.
I discovered boa-constructor a day ago or so, so I just went through this same tutorial. I've also discovered that it creates code - not some sort of project meta-code (in XML or whatever). IMHO a great design choice - but it means you probably won't be finding pre-made projects (why bother?)