24me - Next Generation Personal Assistant
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
WeekCalendar - WeekCalendar is an all-in-one calendar application designed to provide everyone with all the features they need to work to their fullest.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Pocket Informant - Pocket Informant is the Best Calendar app for mac and iOS. Pocket Informant for iOS, Mac desktop, and Android.
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.