[CentOS] access to file system through web browser

Hi.

I am trying to find "something" (php prefered) that I can stick onto a Centos apache server that would allow me to browse a selected file system by employees through a web-browser "explorer like" interface.

I know I can do this through WinSCP (and have done so), but my problem is I have Linux, Windows and MAC clients and my knowledge of MAC's is rather limited.

I can limit access to the (php) files to (ranges of) IP addresses, so security is reasonable ok and doing this through a web interface saves me time, too, as I only have to do this once, and security fixes is easy, too.

Is there anything that would imitate a tree view like interface to browse a file system?

Jobst