This CRM is excellent. Very customizable. There takes some trial and error, but the list of options you have are staggering. Also, it is free (If you host it on your own server), so that makes it even more appealing.

Unique design, transparent and easy to customize. Each window has as so much data as the brain can handle and you do not feel that you have lost control.

I highly recommended YetiForce, because of features and customization they provide. CRM is very user friendly, simply to use and intuitive. They can implement custom module for you! Everything is customizable and you can add fields and particular views. YetiForce shows how good CRM can be.