Cite CRM is an Open Source PHP/MySQL Customer Relations Management System. Cite CRM is a complete CRM with everything a small & Medium business would need.
I found this crm on myitcrm.com 6 months ago and has been working on making it much better with lots of tools, modules and features and many more. demo can be viewed here. ComputerGeeksrus.com/demo username: Admin, Password: password ......Development Support Forum - myitcrm.com/support/viewtopic.php?f=49&t=507 .......... .Don't forget to drop us a message of what you think.
I started using this 2 yrs ago, and for me it was great, but soon ran into bugs and limitations. I then started a fork of this which is free. Search for myitcrm on sourceforge and join us as we improve on this great program.