Senatus - Upvote for questions around a given topic.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
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.
Yapp - Yapp enables users to create personalized mobile applications for their events, gatherings, and groups.
LiveQ - LiveQ is an interactive presentation software that lets audience can ask & vote questions anonymously. You can collect the best questions that you should answer. Loved by teachers, speakers, event owners.
Iventlist - Create an app for your event in minutes 🎟️