Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Torob - Find best price
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
VenueScanner - Connecting event organisers with venue hosts
EventCreate - 100%-free event ticketing
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