Later Reminders - Super simple way to schedule reminders on your phone
EvePlaner - EvePlaner.net lets you create and manage your events the easiest way possible.
Reminder - A better way to keep track of your reminders 📝
Tiny Reminder - Collect content & files from busy clients
Mixily - Hosting your event just got easier.
doo - A smart, simple app for reminders and to-dos