I've read about other web base IDEs but have yet to see one complete enough to be brought to the developer community. So, I cranked up the google and started doing some basic searches. I could always take look at other project to get some ideas.

What I found is in my search is that great minds think alike. It looks like a major company has already undertaken this idea with great enthusiams. Enter Bespin. Bespin is an open source extensible web base ide written in JavaScipt and using the HTML 5 canvas tag. Sigh. Should I even continue? Check out the video to Bespin.

Introducing Bespin from Dion Almaer on Vimeo.

Not bad at all. I wish I had the man power to work on the rksWebEditor full time. Let's move on. . .

The one that seems to appear highest on google.com is the ECCO web IDE. From what I read, this project (hosted on sourceforge.net) is still in the alpha stage. They have 5 developers and it looks like that are not receiving at lot of traffic as of the stats. Perhaps they saw Bespin and gave up.

I found another page on eclipse.com which has some conceptual information about what a web ide should look like, but I couldn't find much more information.
http://wiki.eclipse.org/E4/Web-based_IDE

A link pointing me to podtech.net lead me to a dead end. Perhaps their project has run into trouble.
http://www.podtech.net/home/3064/bungee-labs-and-their-ajax-based-ide

Ah ha, another good one: http://www.notapad.org/index.php This one looks promising and the working demo seems shows off some good fundamental IDE characteritics. It is no Bespin, but a nice quck editor.

Last but not least, the DLR IDE: http://softwareindustrialization.com/WebbasedDLRIDEWithMDbgDebugger.aspx I'm sure there is a working demo, but I didn't find it.

I'm sure there are more, but these are the ones that are the low hanging fruit (easy to find). I did notice that none of these editors are coded in Flash. That is something to think about. Perhaps there is still a market for the rksWebEditor.
Enjoy.