SalesForce.com is the first well-known and successful SaaS application. Riding on its coattails, the company has now introduced Force.com, an integrated set of tools and application services that independent software vendors and
corporate IT departments can use to build any business application and run it on the same infrastructure that delivers the Salesforce CRM applications. More
than 100,000 business applications already run on the Force.com platform. It includes the company's Apex programming language.