Review of FOSS Applications
This is a good review of some very powerful FOSS applications. (FOSS Free and/or Open Source Software).
the review appears in the Smashing applications Blog - http://www.smashingapps.com/2008/08/12/19-most-essential-open-source-applications-that-you-probably-want-to-know.html

Some of the applications we already know like:
But there are some other that are very interseting including 2 project management tools.
dotproject - Open Source Project and Task Management Software

Open Workbench - Open Source Project Management and Project Scheduling for Windows

read the whole entry for the rest, its very worthwhile

