Future of IDEs

IDE ( Integrated Developement Environment) is a word common to software engineers.. There are lot of IDEs in the market like eclipse, netBeans,...etc. These are all standalone system based IDEs, where you have to install these IDEs on your system. Just think in a weird way... A web based IDE.... yes come on.....

I came across a live editor for Javascript and XUL where, every key press editor parses the entered text in the case of XUL. In the javascript editor you can press tab key to get the matching elements... This is a rudimentary form of IDE... But there is a lot more potential to this idea. I have searched using google for the live editor for PHP, but i got only message forums where people have discussed about it, not executed yet as per my knowledge.

So come on guys iam inviting your views about this idea... a web based IDE for PHP... Come on give me some constructive help... We can do it.

Live editors of XUL and Javascripts are available here ::
http://ted.mielczarek.org/code/mozilla/extensiondev/