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.
SysAid - Transform your IT service delivery with SysAid's seamless automation, ensuring a consistently exceptional experience for all users effortlessly
Drupe - Next generation contact manager and dialer.
Simple Contacts - Contact lens prescriptions from home
Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.
Kontact - Kontact is the integrated Personal Information Manager of KDE.