XMPP (also known as Jabber) is the leading open standard for presence and real-time messaging. Since 2004, it's been an approved standard of the IETF (the same organization that standardized email and World Wide Web protocols). A rich set of extensions to the protocol are maintained by the Jabber Software Foundation. Today, XMPP is used by leading companies, millions of users worldwide and is the best choice for open real-time collaboration. Our own IM tool is based on the above. You can co