Play well with others
The Team License is an add-on product (you can add it to any Unity or Unity Pro license) that extends the editor with features that enable easy collaboration — both local and remote. Like everything else in Unity, it has been designed to combine power and simplicity.

Existing Asset Server 3.x customers upgrading to Unity 3.5 will receive full Team License functionality automatically. The Team License can also be easily added to any new or existing Unity license in our online store.
Simple version control
Unity Asset Server adds full version control for all game assets and scripts to Unity.
Fast asset sharing
With Unity Cache Server, grabbing changes from other team members is almost instant.
Easy Extensiblity
Generic VCS support in Unity makes basic collaboration possible for all Unity users