Apps with 'Address book integration' feature

Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

The top contact management platform for professionals, teams and small businesses. Sync, deduplicate, enrich, & more. Effortlessly manage your address book contacts with Contacts+.

Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to work with any IP-based communications systems and...

Todo Pro is your personal assistant and ready to help you get stuff done. Todo comes with powerful tools to tackle everything from "honey-dos" to important work projects.

PhonerLite enables your PC to use it for internet telephony (VoIP , Voice over IP, SIP). You need an internet connection and an account from a provider supporting the SIP protocol.

Keep track of friends, family and colleagues you care for.