Pipl - The most comprehensive people search. Pipl is the place to find the person behind the email address, social username or phone number.
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Evercontact - Your contacts always up to date and automatically with Evercontact.
Free Address Book - In our contact management software you can store fast and easily name, phone numbers, birthdays, address, company name, city, mobile numbers, insurance and loan info, e-mail addresses.
CamCard - CamCard reads business cards and save instantly to phone Contacts.
Clearbit - Clearbit provides Business Intelligence APIs