Google Talk (GTalk) is a free Windows and web-based application for instant messaging and voice over internet protocol (VOIP), offered by Google Inc. The first beta version of the program was released on August 24, 2005.
Instant messaging between the Google Talk servers and its clients uses an open protocol, XMPP, allowing users of other XMPP/Jabber clients to communicate with Google Talk users. VoIP in Google Talk is based around the Jingle protocol. The technology used within the Google server network however is not publicly known.
The Google Talk client is only available for Microsoft Windows (2000, XP, Server 2003, Vista and Windows 7). Mobile clients are also available for the Palm Pre, BlackBerry, iPhone and T-Mobile G1. With the release of the Google Talk gadget, users of all platforms supported by Adobe Flash Player can also use Google Talk. Many other XMPP clientsare compatible with Google Talk, and support a variety of other platforms.
Yahoo! Messenger
Yahoo! Messenger is an advertisement-supported instant messaging client and associated protocol provided by Yahoo!. Yahoo! Messenger is provided free of charge and can be downloaded and used with a generic "Yahoo! ID" which also allows access to other Yahoo! services, such as Yahoo! Mail, where users can be automatically notified when they receive new email. Yahoo! also offers PC-PC, PC-Phone and Phone-to-PC service, file transfers, webcam hosting, text messaging service, and chat rooms in various categories.
Yahoo! Messenger was originally launched under the name Yahoo! Pager on March 9, 1998.[1]
In addition to instant messaging features similar to those offered by ICQ, it also offers (on Microsoft Windows) features such as: IMVironments (customizing the look of Instant Message windows, some of which include authorized themes of famous cartoons such as Garfield or Dilbert), address-book integration and Custom Status Messages.[2] It was also the first major IM client to feature BUZZing and music-status. Another recently added feature is customized avatars.
Rediff.com
Rediff.com India, NASDAQ: REDF is a news, information, entertainment, and shopping portal. It was founded in 1996 and is headquartered in Mumbai, India with offices in New Delhi and New York City, USA.
According to Alexa, Rediff is the No. 5 Indian web portal. It is the only India-based website to appear in the first 100 websites. It has more than 250 employees. 87.8% of the millions of visitors to Rediff.com are from India, while the rest come primarily from the USA(3.4%) and China. In April 2001, Rediff.com acquired and began offering India Abroad. It is ranked 66 on Alexa.
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