Future - Calendar events around the clock

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

Event Calendar App - A simple, easy to manage, way of displaying events

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.

Loxi - Easily add an events calendar to any website.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets