Reminder - A better way to keep track of your reminders 📝
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
Wonder - Your personal research assistant
Vamos - Local Event Discovery
Later Reminders - Super simple way to schedule reminders on your phone
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.