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.

Google - Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web

Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.

GO Contacts EX - GO Contacts EX is a simple contact-dialer application is designed for those who are looking for a quick and smart way to get in touch with the people around them.

Windows Contacts - Windows has many extraordinary organizers, and in the event that you include distributed storage, then you presumably have more.

Drupe - Next generation contact manager and dialer.