Google Talk Logo – Google Talk is an instant messenger client and VoIP protocol XMPP (like Skype ) developed by Google . The beta version of Google Talk was released on August 24th of 2005 . Google Talk supports under the interoperability protocol Jabber / XMPP , being configurable in programs such as Psi , Miranda IM , iChat and Pidgin (formerly Gaim), among others. For a client XMPP can connect you need encrypted TLS and authentication SASL PLAIN over port 5222.
The service is available for users of Gmail . Currently registration is open, and you can get an account going to gmail.com . The fact that Google has used XMPP as the protocol has been great news for many people who think that this will serve to extend XMPP and increase performance. The protocol that Google has developed for voice communication, Jingle , has been released from the start, so that any client can include. Psi and Pidgin plan to include it. More