An XMPP server licensed under the Open Source Apache License
Openfire is a real time collaboration (RTC) server licensed under the Open Source Apache License. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to setup and administer, but offers rock-solid security and performance.
A collaboration platform that enables non-locking, synchronous, real-time collaborative (NOT text only) editing with editor independence. It also provides edit by edit session playback. To collaborate just enter a name, group and password.