During my college, i got some spare time to do testing Open Source Software [Web Based]
So far i already test these Open Source Software
First one was SugarCRM [http://www.sugarcrm.com]
This software were great for Enterprise company, but i dont really understand all of their function (its too many XD).
All general function already include in this software, and they already make own installer for us to install without hassle.