aMSN 0.97 (beta) (MSN Messenger/Windows Live Messenger clone)

A nice little alternative to MSN Messenger (Windows Live Messenger).

Available from: http://www.amsn-project.net/
Available for: Linux, Windows, OS X, and FreeBSD. Source also available.

Download: 7.6MB

Installation: 24MB
Took about 10 seconds to install.

No ads, slightly smaller than MSN/WLM (24MB vs. 30MB), multiple account logging, tabbed message window (one window for all conversations), webcam support. I've been using it for a long time with no problems.

The only negative things I have found with it:
Sometimes it won't log in on the first try (or the second), but MSN/WLM does that sometimes too. 
No voice support (yet).

Note: This is beta software. Some users may experience issues in running this software.

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