Bespin is now Mozilla Skywriter, moves to GitHub
mozillalabs.com
mozillalabs.com
They are currently trying to get it to work on the iPad/mobile safari. That could quickly make the iPad a reasonable mobile development environment.
BTW. The mockup of your CMS looks impressive.
We're actually in our last stage of heavy development. We've got ~35 sites running on the system now and will soon be able to open it up.
I would love to see a true browser-based IDE but Bespin isn't that just yet. I see how it works for a CMS but it won't replace NetBeans or Eclipse very soon.
It seems like they have built a strong base. Some cool projects have adopted it. And it seems like in a year or two it might even have a really strong feature set. So I'm excited even if I don't use it much currently.
[This comment was edited with Bespin bookmarklet]
The whole point of Skywriter is the underlying totally new architecture: The use of canvas, incredibly fast rendering and unlimited editing file size. No other textarea-based editor can do that. When it comes to editing source code in the browser, there are often 5000 and more Lines. Other editors slow down or can't even handle such many lines.