minipoll - Create simple shareable polls in seconds

Ferendum - Ferendum is one of the top-notch utilities that has been making it easy for you to create polls that can be shared with everyone with people to get views and suggestions with real-time support.

Simple Poll - The easiest way to create polls in Slack

Fast Poll - Create instant, real-time polls for free

Polls.io - Create simple polls in seconds

poll.ly - your perfect partner to gather ideas and opinions in real time