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.
Envoy - Visitor registration that's changing how guests are greeted in companies around the world.
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.
TractionGuest - Safe, secure workplace for all.
Clearbit - Clearbit provides Business Intelligence APIs
Proxyclick - Connect with Confidence