Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Iventlist - Create an app for your event in minutes 🎟️
Zoho Backstage - Plan, run, and analyze your event— all from one place
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
sched - Event management software