minipoll - Create simple shareable polls in seconds
Tally.so - The simplest way to create forms, for free.
Qstn - Create and share polls and get live results
Breeze - A project management software that your whole team will actually love using. The easy way to organize, plan and track progress on your projects.
Vizia - Add quizzes and polls to your embedded videos
Simple Poll - The easiest way to create polls in Slack