Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
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.
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.
Mentimeter - a web-based polling tool for workshops, conferences & events
Instagiffer - Create GIFs from anything!