SugarCRM

SugarCRM community edition is an open source edition that produces web application. SugarCRM's functionality includes sales-force automation, marketing campaigns, customer support, collaboration, Mobile CRM, Social CRM and reporting. This edition comes fully featured with all the basics for sales, marketing, support automation, and user and ACL management, as well as the developer tools Studio and Module Builder for customizing the application.It is installed on the top of LAMP stack and written in PHP. SugarCRM comes with three editions: Community Edition (free), Professional Edition and Enterprise Edition.