24me - Next Generation Personal Assistant
Life Calendar - Your life in weeks
Awesome Cal - Awesome Cal is a Calendar application for your iPhone that you can take anywhere and keep close by to monitor all the upcoming birthdays, festivities, meetings, and more from a single place.
Kin Calendar - The simple and connected calendar
Pocket Informant - Pocket Informant is the Best Calendar app for mac and iOS. Pocket Informant for iOS, Mac desktop, and Android.
WeCroak - An app to remind you of death