Agreed. Imagine this sort of collaboration in the Heroku editor... Or online collaborative versions of Textmate, emcacs, vim, etc.

Be nice if they offered textile and markdown rendering.

SubEthaEdit's collaboration engine is licensable (Coda has it), so it's possible something like TextMate could go there. I'd also like to see a Windows package get it because that's a pretty big limitation with SubEthaEdit at the moment.

> The AppJet team plans on releasing this new server-side software (similar to their previous release but with the addition of Comet functionality and other pieces) completely Open Source as well.

-- from here: http://news.ycombinator.com/item?id=369500

Is their other stuff really "open source"?

They definitely released their source code (available here: http://appjet.com/download) but the only mention of a license on that page is:

Disclaimer: The appjet.jar software is provided "as is", and you use it at your own risk. AppJet Inc. is not responsible for anything bad that may happen.

From that, it's not really clear whether it's open for modification and redistribution. Any of the AppJet guys care to comment?

They definitely didn't release their code. That jar is full of built class files, dependencies and some of their library in javascript.