Jabber (www.jabber.org) is an open source software platform for instant messaging (IM). Jabber provides an open source alternative to proprietary IM systems like AOL Instant Messenger and MSN Messenger. The Jabber community not only provides a Jabber server and Jabber clients for various platforms, but also transports that connect the Jabber system to other IM systems. Jabber is developed in the C language and bases its messaging on XML.

The Open3.org Jabber adapter permits communication between the Open3 and Jabber servers. This adapter provides for instant messaging abilities to be easily added to an integration system powered by Open3.