Google Talk, Yahoo, Web.de, Jabber.org, Jabber.ccc.de, MSN, Facebook and Skype. From Twitter I have separated again.
But here is the Jabber protocol, are presented also known as XMPP. First things first:
Jabber is not a network. Unlike ICQ, MSN, AIM, and the rest not all, Jabber has no operator, no central servers - which therefore can not fail - and no commercial background. Jabber is nothing but a first protocol. A protocol is the basis of an IM network that determines the form in which news, images, language, etc. are transmitted. So if such program a program to chat in an IM network will have to know the protocol. Otherwise, he could not log on again. In the case of ICQ, MSN, AIM, ... is the particular protocol is not publicly available. Many implementations of other programs (Trillian, Miranda, ...) are based on a "hack" to use the particular network to be able to. This becomes particularly apparent when the relevant network operator which changes the protocol and the above programs will no longer have access to it available to a fix. For the Trillian in the past quite well ever taken months until an update was available. I was on my Windows time of intense self-Trillian Pro users.
Jabber, however, is an open protocol. More specifically, the accumulation of several Jabber XML-based protocols. Now, there are now numerous companies and organizations who have written both open source and closed source applications for Jabber - both server and client - Ie "chat program" for the PC. Especially in the area of the clients are almost exclusively open source solutions. Some examples are Pidgin (formerly Gaim), PSI and Spark Spark is a powerful example of how to merge commercial and open source an increasing number of projects. The editor of Spark has decided not too long ago to develop its commercial Jabber Wildfire Server as an Open Fire in an Open Source version.
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