[wlug] Software Info, Wiki with file attachments?

Hi, Just wondering if anyone knows of a PHP based wiki that allows users to attach binary files to a page. e.g. a page called "ServicePack4" could have a description and attached a copy of Service Pack 4. Users would also be able to attach files themselves. I have a use for it internal to our company for keeping track of information relating to client sites. Regards, Andrew Thrift