GitHub Polls - Polls for GitHub issues and readme
Surveys in Slack by Polly - The world's first fully immersive Slack-based survey product
Twitter Polls - Polls embedded in tweets
Mentimeter - a web-based polling tool for workshops, conferences & events
minipoll - Create simple shareable polls in seconds
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.