Gobby is a free collaborative editor. This means that it provides you
with the possibility to edit files simultaneously with other users over
a network. It supports multiple documents in one session and a
multi-user chat. The platforms on which you could use Gobby are so far
Microsoft Windows, Linux, Mac OS X and other Unix-like ones.

This is the 0.4 version of Gobby, which is not using the Infinote
protocol.