Shared Space for Mac

From All-Seeing Interactive:

Tool for visual thinking, group working and content management. It allows users to create visual maps of information using web-like structures.

Documents from any application can be imported into a space, and the software's built in version control allows users to keep track of earlier versions of documents easily.

Relationships between elements can be described using links. Unlike hypertext links, such as those found on web pages, links are presented in a visual fashion, allowing users to see both linked elements concurrently, and traverse the space in both directions.

Spaces and views can be shared over the Internet or a local network. SS2 also makes use of Rendezvous, allowing you to see other users on your local network
This version of Shared Space 2.0 is only available for Mac OS X.