Opensource CRM, also works with iPhone, BB and WM

SugarCRM is a leading provider of commercial open source customer relationship management (CRM) software for companies of all sizes. They offer several deployment options, including on-demand, on-premise and appliance-based solutions to suit customers' security, integration and configuration needs. The best part, you can download your copy for free for the basic version. Now is that a deal or what? Check out here