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.

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

Vamos - Local Event Discovery

pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features

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

Ticket Tribe - Sell tickets online with no fees per ticket