Salesforce Mobile
Salesforce.com's Salesforce Mobile client integrates with native iPhone functions and lets users initiate customer contact (by phone or e-mail) through the CRM application. Users can also have customer information sent directly to their iPhone and navigate through customer records. The big new development: Third-party Force.com apps can now be deployed to the iPhone, and developers building applications natively on Force.com can deliver them on the iPhone without writing any extra code.
Salesforce Mobile