You can try COLLADA , a team centric almost P2P type system for team work.
Post, upload, download are basic foundations of the App and it has a few more interesting features and is presently FREE.

@ Friendly_Frank absolutly agree with you about documentation and in particular, tutorials.

Adobe, Discreet, Macromedia etc all understood this and are still selling strong from their initial documentation releases, they were visionaries who hired educators to write the content as far as I know and of course, all are now standard names for the industry.

Why other vendors do not pursue this course is crimnal when you look at some of the mighty software that vaporises due to lack of documentation and therefore, user familiarity.