This (among the two other variations of it for different major OS's) was one of my favorite threads on TFP 3.
List your favorite suggestions for Windows downloads here and briefly explain why.
To start, I recommend <a href="http://www.jdennis.net/">DeadAIM</a> to add onto the AIM client. You'll get transparency, logging, tabbed windows, plus more.
If you use more than one chat protocol, I recommend <a href="http://gaim.sf.net">Gaim</a> It's open source, the first IM client to have tabbed IM Windows, you'll also get transparency with it, and Trillian uses some of the code from this project.
For word processing I recommend <a href="http://www.abiword.org/">abiword</a>, my personal favorite word processing program.
And, lastly, for browsing I recommend Mozilla or Firefox - both can be found at
www.mozilla.org