Zimbra Collaboration Suite (ZCS) is a support system for collaborative work that includes integrated enterprise services via web: e-mail, group calendars, address books and document management.

What is a Collaborative System?
A collaborative computer system (also known as Collaborative software or Groupware) is a software platform designed to help people teams, in differents locations and working in parallel, to achieve common goals. Systems that fit this definition are the ones that provide a set of functionallities such as e-mail, calendars, instant messaging (chat), forums, shared documents, and so on.

See brochure (spanish).