FullContact - Put the power of full contact information into your web or mobile apps.
Simple Contacts - Contact lens prescriptions from home
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.
Memotoo - Memotoo allows you to sync your data (contacts, calendar, tasks, .) with phones (iPhone, Android, Samsung, ..
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Pobuca Connect - Connect with your contacts.