web based browser...

hi... i'm trying to find a good web based (php) browsing app for handling remote file management functions... i've seen a number of open source apps, but haven't come across any that meet my needs. i'm looking for the ability to: -edit/view/rename/copy/move/delete files -copy/rename/move/delete folders -display number of files in a folder -search for file/folder by name/regex if you know of an app that does the above, or if you've used a browser based file manager kind of app that's really good, let me know. thanks..