CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.

Softaken Merge vCard - Softaken Merge vCard Tool to simply combine multiple VCF files into one VCF file. 100% secure and instant merging by maintaining contacts information.

Evercontact - Your contacts always up to date and automatically with Evercontact.

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.

CRM-gx - Contact Management

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