There're several online IDEs for PHP and some even for Python, but is there any open-source online IDE like IDEone that supports atleast the major languages (PHP, Python, Ruby etc..)?
Bespin is a sort interesting online js based editor in development primarly by Mozilla Labs. It's open source, saves files on the cloud and also supports some SCMs (git and svn at the moment), files and project sharing.
I created ShiftEdit Web Based IDE
It uses Bespin and has basic PHP support.
Includes Syntax highlighting, Integrated (S)FTP, Tabs, Find/Replace, Revision history + it's free.
Cloud9 IDE includes a promising evolution of Mozilla's Skywriter/Bespin experiment (see Mozilla Skywriter has been merged into Ace).
It is open source (https://github.com/ajaxorg/cloud9) and has GitHub support.
CodeRun: http://www.coderun.com/
http://online-php.com - Open source solution for editing files on your FTP server. Features basic required functionality, Easy deployment on your servers.
CodePad seems similar to IDEOne (I wasn't aware of it, thanks).
You can write and share PHP functions here
来源：https://stackoverflow.com/questions/2040108/opensource-online-ide