OnlineQuestions.org - OnlineQuestions.org is an online tool to ask and upvote questions during large lectures, classes...
SlideLizard - Powerpoint plug-in for live audience interaction
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.
Pingo - Optimize images for the web quickly 🖼️⚡
Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.