Difference between Salesforce.com and Force.com ?

Hello  Suraj

Firstly

Salesforce.com is built on the Force.com platform - they are more or less interchangeable from a technical standpoint. It's a mere matter of marketing semantics. Force.com applies to the infrastructure and codebase that is the foundation for the entire Salesforce solution. They are enforcing the Force.com concept more so because Salesforce can do so much more than CRM nowadays.

They're effectively the same thing, but Salesforce.com is generally used to refer to the CRM functionality (the sales, service and marketing applications) and Force.com is generally used to refer to the underlying platform (the database, code, and UI on which all the apps are built).

Secondly

Regarding the functionality situation. In this case I think you are referring to the Force.com Edition in comparison to the standard Salesforce.com Editions (Professional, Enterprise, etc.). In this case, yes there is a difference. The Force.com Edition (or Platform Edition, depending on the marketing materials you have in hand, what day of the week it is and whether or not your sneakers have green stripes) is a standard Enterprise Edition (if you buy in conjunction with a full Enterprise Edition) minus the CRM functionality - so no Leads, Opportunities, etc. (as far as I know). This Platform Edition is aimed at providing customers with the "platform" on which to build custom applications - for companies that do not so much use Salesforce for the CRM.

And lastly, regarding the Developer Edition accounts you created with interests in Salesforce.com customization and Force.com platform - again, just another marketing ploy. Salesforce uses the preferences you set to send you more targeted information via email regarding the topics of interest to you.

Hope it helps

Salesforce is a company andSalesforce.com is a Customer Relationship Management (CRM) application developed based on Software as a Service (SaaS). Force.com is a platform that helps developers and business users to build powerful enterprise applications.