GOG.com - DRM-free game store, selling both new and old titles. No clients required.
Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
Origin - Origin is your new digital playground. It’s where you go to find the best that EA has to offer.
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.
Epic Games - Computer game storefront that gives 88% of revenue to developers
Mentimeter - a web-based polling tool for workshops, conferences & events