Run the World - A platform that enables live, online events
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Flutin Live - Flutin Live is an online live streaming platform for mobile and desktop browsers made for Windows.
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
Calendall - Follow the best events online, without leaving your couch.