AbTest.io - A free url shortener with A/B testing features
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Anboto - Anboto provides web customer service and e-Commerce technology based on semantics and natural language processing.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
GoodUI Evidence - People's A/B test results that show which UI ideas work best
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