Digsby
Digsby is a ‘combo application’ that support Instant Messaging, Email and Social Networks like Twitter.
Instant Messaging Platforms supported are AIM, MSN, Yahoo, ICQ, Google Talk, Jabber, and Facebook Chat. For email it supports Hotmail, Gmail, Yahoo Mail, AOL/AIM Mail, IMAP, and POP3 accounts. Social Networking support includes Facebook, Twitter, MySpace and LinkedIn accounts.

Traffic rankings are sourced from multiple sources, if available, for the Twitter application. This includes Alexa, and Compete rankings.
October 11th, 2009 at 10:10 AM
Not actually available for OSX.