Sli.do - Slido is the ultimate Q&A and polling platform for live and virtual meetings and events. It offers interactive Q&A, live polls and insights about your audience.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Speak up Live - Anyone can ask questions - the team votes on the best ones.

Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform

Hypersay Slides - The next generation interactive presentation tool

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