Digsby is #18 in Top 22 Messengers
Digsby is a freeware proprietary multiprotocol instant messaging application. It supports most mainstream IM services such as AOL Instant Messenger, Microsoft's .NET Messenger Service, Yahoo! Messenger, ICQ, Facebook Chat, MySpace IM and XMPP/Jabber-based services such as Google Talk and LiveJournal's IM. Secondly, Digsby supports e-mail notifications via POP, IMAP and webmail like AOL, Yahoo! and Hotmail - including the ability to mark messages as read, as spam or delete them from the client itself.
Positions in ratings
#18 in Top 22 Messengers
The best alternatives to Digsby are: Pidgin, Trillian