SugarCRM
SugarCRM is one of the world's leading providers of commercial open source customer relationship management (CRM) software for companies of all sizes. SugarCRM offers a flexible, cost-effective alternative to proprietary applications. SugarCRM's open source architecture allows companies to more easily customize and integrate customer-facing business processes in order to build and maintain more profitable relationships. SugarCRM provides several deployment options, including on-demand, on-premise and appliance-based solutions to suit customers' security, integration and configuration needs.

SugarCRM Features
SugarCRM brings a feature-rich set of business processes that enhance marketing effectiveness, drive sales performance, improve customer satisfaction and provide executive insight in all categories of business performance. It is a flexible platform providing many powerful capabilities to both large and small organizations.
SugarCRM is built on the pure Open Source LAMPS platform: Linux or Windows, Apache or IIS, MySQL, PHP, and SugarCRM. Its mobile solutions translate to less downtime and greater productivity. Sugar Suite integrates e-mail and calendar information with Microsoft Outlook, ensuring that company communications are centralized and coordinated. Due to the Flexible Delivery Model, there are no constraints around deployment. Moreover, the customizable User Interface and Workflow guarantee adaptation to the user, not the other way around. The Sugar Suite Modular Open Source Architecture provides 100% visible source code for inexpensive customization and support. The SugarCRM Neutral Operation System avoids "forklift" upgrades and propriety vendor lock-in.