Open Source Web-Based File Management?
mister_bee asks: "I've been tasked with finding the best solution for implementing a web-based file management system. The goals of the system are easy management of files and permissions by the admin and a simple interface for the client. In this implementation, the client should only see their files and folders and not be bothered by file upload capabilities or permissions. Over the years I've seen a need for such an animal time and time again and have never found a project that I was happy with. There's always the possibility of modifying one of the many web FTP implementations that can be found over at Freshmeat of SF. Suggestions anyone?"
Why is anything anything?
Plone does what you want right out of the box. It's free, open source software. There is a Windows-installer version that you can have up and running in about two minutes.
Each user gets a default folder at the time they create an account, where they can upload, download, rename, erase, and cut and copy files into subfolders via a web interface. You can also create groups and assign group permissions to folders.
For extra convenience, download the free NetDrive client from Novell. It runs in the background and can map a Plone folder as a mapped network drive in Windows using WebDAV, so for example, the 'P:' drive on my Windows workstation at home is actually a folder on the Plone webserver across town, but I can drag and drop files to it. Plone is an amazingly powerful and easy to use tool by itself, but in combination with NetDrive, it's really, really cool.
Plone has a million and one other uses as well. It's a fully formed web app server based on Python, with hundreds kinds of plug in products, such as group calendar components or wiki pages, that form a complete, extendable content management system. Have fun.