Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
Food 52 - Social network for foodies.
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.
One Month Skill - Learn a new skill every month with daily emails
Mentimeter - a web-based polling tool for workshops, conferences & events
One Month iOS - Learn to build your first iPhone app in just one month