Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Run the World - A platform that enables live, online events
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
Flutin Live - Flutin Live is an online live streaming platform for mobile and desktop browsers made for Windows.
Ticket Tribe - Sell tickets online with no fees per ticket
Calendall - Follow the best events online, without leaving your couch.