FullContact is the API that keeps contact information current.
FullContact provides identity resolution for all of the disparate pieces of contact information out there on the web. They do this by aggregating billions of contact records from hundreds of public websites, social networks, APIs, trusted partners and users of their service. FullContact’s patent pending algorithms process all of this data and automatically produce clean, accurate full contact records. As a final step, they then check each data element to make sure that it’s publicly available before providing it to their customers.
FullContact’s target market is developers that have applications that contain people data. To date, most of the development has centered on CRM companies, application developers utilizing contact data, and businesses that can improve productivity via accurate, up to date contact information. Developers have built iPhone Apps to complete address books, CRM enrichment applications, HR applications, browser extensions and more.