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.
Nokia Suite - Nokia Suite is the next generation computer software that will replace Nokia PC Suite.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
fruux - Free service that takes care of your contacts, calendars and more so you don't have to.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
PhoneCopy - Transfer your contacts and other data between your phone and an online storage. Keep your data in sync, backed up, and accessible anywhere with PhoneCopy.