Loomio - Loomio helps groups of people make decisions together, online.
Pingo - Optimize images for the web quickly 🖼️⚡
PollUnit - Create and customize public or anonymous votings, surveys, free tables, idea collections or audio, video and photo contests.
Presentii - Imagine a tool that lets you capture audience interest in your presentation content as you present.
Mentimeter - a web-based polling tool for workshops, conferences & events
SlideLizard - Powerpoint plug-in for live audience interaction