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.
Find your best festival - Compare the music you follow with 100s of festival lineups
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Everfest - A global calendar and search engine for festivals
Meetup for iOS and Android - Discover groups that are all about the things you love
Hootenanny - Find music festivals featuring artists you love.