Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
Ranker - Ranker goes far beyond Top 10 lists with deep rankings about everything, voted on by everyone.
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.
ThoughtCatalog - ThoughtCatalog is a popular digital youth culture magazine with over 120,000 articles, 400+ books, and more than 22,000 Writers.
Mentimeter - a web-based polling tool for workshops, conferences & events
Pearltrees - Pearltrees is a place to organize all your interests. It lets you organize, explore and share everything you like.