#3. Skype If you haven’t herd of Skype you must be living under a rock. Skype is a great application which allows the user to make free Skype-to-Skype calls and very cheap Skype-to-Lan calls (Skype Out). There are other programs which make this program even better such as the new iPhone application Fring. Also, [...]

#17. Adium One of the best all-in-one messenger clients around.  Adium is a free chat client that has support for Windows Live Messenger (MSN), AOL Instant Messenger (AIM), Yahoo Messenger, ICQ, Jabber (XMPP), Google Talk, Bonjour, Apple .Mac, Lotus Sametime, Novell Groupwise, QQ, Gadu-Gadu, Live Journal talk, and MySpace IM. Overall, besides supporting so many different protocols, [...]