FCorp ID Book - ID Book is a handy, easy to use application specially designed to offer users a simple address book.
Evercontact - Your contacts always up to date and automatically with Evercontact.
EuroOffice - EuroOffice is free and open source office software built on OpenOffice/LibreOffice.
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
Redmine - Flexible project management web application
Pobuca Connect - Connect with your contacts.