Files App - Files is a beautiful single-file PHP file browser and manager that can be dropped into any dir on your server, instantly creating a gallery of files and folders.

Funambol - Funambol is the leading provider of platforms that power many cloud services.

VerHost - VerHost is a file sharing platform which has no sign up. Unlimited Uploads and Unlimited Downloads.

ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.

Filen - Next Generation end-to-end encrypted cloud storage. Get started with 10 GB of free space.

fruux - Free service that takes care of your contacts, calendars and more so you don't have to.