Digsby is a free software product that helps you manage all your IM, email, and social network accounts from one easy-to-use application.
digsby is a multiprotocol IM client that lets you chat with all your friends on AIM, MSN, Yahoo, ICQ, Google Talk, and Jabber with one simple to manage buddy list.
Plus, digsby is an email notification tool that alerts you of new email and lets you perform actions such as ‘Delete’ or ‘Report Spam’ with just one click.
digsby is also a social networking tool that alerts you of events like new messages and gives you a live Newsfeed of what your friends are up to.
Digsby supports:

• *IM Accounts: AIM, Windows Live Messenger, Yahoo Messenger, Google Talk, Facebook Chat, ICQ, and Jabber
• *Email Accounts: Gmail, Hotmail, Yahoo Mail, AOL/AIM Mail, IMAP, and POP
• *Social Networks: Facebook, MySpace, Twitter