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
PromoTixApp - PromoTix is the world's first and only free online ticketing platform for events. Use PromoTix to create and ticket events, market events, and monetize your live stream event with secured and ticketed unique URLs online to the world.
RegOnline - Regonline is the leading online event registration, planning and management software.
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
idloom-events - idloom-events management software is a complete and professional tool that manages all the preparations for your event: website, online registrations, reservations, payments, etc.