Loomio - Loomio helps groups of people make decisions together, online.
Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
Mentimeter - a web-based polling tool for workshops, conferences & events
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.
PollUnit - Create and customize public or anonymous votings, surveys, free tables, idea collections or audio, video and photo contests.
LettuceMeet - The easiest way to schedule group meetings.