Loxi - Easily add an events calendar to any website.
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.
Future - Calendar events around the clock
Iventlist - Create an app for your event in minutes 🎟️
Calendar by 44 - Blazingly fast calendaring
Meetup for iOS and Android - Discover groups that are all about the things you love