Poll Everywhere - Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.
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 🖼️⚡
Glisser - Glisser makes presentations interactive – it takes regular PowerPoint, Keynote or PDF slide decks and pushes them out live to audience mobile devices. Your audience can then interact with the presenter with via polls, Q&A, voting and much more.
Ideahunt.io - Ideahunt.io is a tool that is now available as Svava, it allows you to make every meeting successful, and provides you the features to conduct interactive meetings.