Salesforce Data.com
Data.com is the sales and lead generation component of Salesforce.com's Sales Cloud customer relationship management (CRM) platform.
Salesforce.com's cloud-based product enables automatic acquisition and management of CRM records. The Data.com platform enables sharing of contact data (similar to what is found on business cards) among members through its large user-generated database. Users not only access the database but also through their interactions constantly build, maintain and update its records, which include tens of millions of contacts from over four million companies.
The Data.com Prospector and Data.com Connect components provide access to company and customer contact information uploaded to the Connect database, along with data from the Dun & Bradstreet database of company profiles and information. Another component of the product, Data.com Clean, automatically enters and deduplicates contact information for customers and companies to ensure that the data is as consistent, current and accurate as possible.
See the Data.com keynote from Salesforce's Dreamforce user conference: