Digsby is a free application that enables you communicate with your friends over Yahoo, MSN, AIM, GTalk and more without having to install separate clients. Apart from chatting with your friends you can also check emails from multiple providers like Hotmail, Gmail, Yahoo Mail, AOL/AIM Mail etc. As soon as a new mail arrives, Digsby gives you a notification via popup. Clicking a popup takes you right to the message with auto-login into web-mail accounts. Digsby also helps you in staying up to date with everything happening on your Facebook, Twitter, MySpace and LinkedIn accounts. Well, it is quite a useful application which gives you single point of contacting and communicating with all of your friends irrespective of the IM client they are using.
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