"Not too long after the Jabber project's first public release in 2000, a group of open source developers went to work producing a client for Jabber users that would provide basic connectivity and also work with the Jabber protocol's transports.
"This week, after seven years of development and a number of releases, the Psi project announced a new release candidate for its Jabber client, a rare mix of robust support for XMPP and cross-platform compatibility. Psi is Free Software, licensed under the GNU GPL, which makes its source code available to anyone..."