Need some suggestion about popular web file manager

[eluser]mi6crazyheart[/eluser]
Hey Guys,
Any body can tell me about some free & open source web file manager. Recently, I've got a file manager called as "KCFinder" . It's looks good. But, before using this i really want to know some more about other file mangers(free/open source) which are popular on web.

[eluser]WanWizard[/eluser]
I have used eXtplorer in a (non-CI) project for one of my clients.

[eluser]mi6crazyheart[/eluser]
Thanks WanWizard for this info...