SalesForce.com

SalesForce.com is the SaaS industries success story, recently achieving $1 billion in annual revenues, with over 1 million individual subscribers.

SalesForce.com offers a comprehensive CRM system designed to streamline and automate sales processes, while providing management information.  Pricing starts at $99 per year per user for a system that is limited to 5 users.  Their main service starts at $65 per month per user.

SalesForce.com also offers extensive customization capabilities through their Force.com platform.  This is a complete application development system that can be used to customize the CRM application, or to build completely new applications.

The service is marketing and sold through direct sales and through a partner network.

SalesForce.com is a very comprehensive offering, and has been deployed by many Fortune 500 companies.