Mac OS X only: A popular alternative to Mac’s iChat is multiclient Adium. Supporting AIM, MSN, Jabber, Yahoo! Messenger, Bonjour, MySpace, Facebook, amongst others Adium is has all the goodies in the bag.

Adium’s Features

First of all Adium is Open Source allowing anyone to contribute. It has a slick UI with tabbed chats that simply look good. Also contains an extensive system notification with the ability to download custom themes as well.

Adium Impressions

If you are looking for a multiclient instant messenger, Adium is something you have to check out. I’ve been using it since I found out about it and haven’t stopped using it ever since. It’s user friendly, intuitive, and stylish. So what are you waiting for if you haven’t tried it out yet?
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Digsby Announcement
Digsby just got better! We released a new build that cuts RAM usage by almost 75%, improves performance, fixes hundreds of bugs, and introduces LinkedIn support!

So what are you waiting for? If you use Pidgin, you must check out Digsby. This multi-IM app is extremely promising. I fell in love with it at first site.

Digsby Screenshots
Digsby Features

Why we love Digsby

The IM interface is your typical messenger with contacts. Talking with a buddy pops up a message window that supports tabbed conversation windows with all your buddies.

If you don’t have the conversation window, and receive a new message, it shows up as a simple status message that fades in a little corner of screen and allows you to reply within and closes immediately.