Google Calendar - Spend less time managing your day & more time enjoying it
Evercontact - Your contacts always up to date and automatically with Evercontact.
CalenGoo - Features | 1.0.175 for Android™
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
Jorte - Schedule books must be practical and has a good design.
CRM-gx - Contact Management