Simple Poll - The easiest way to create polls in Slack
StrawPoll - StrawPoll Meetings offers a simple interface to create polls that can be used to schedule meetings. With two simple steps, your next meeting is scheduled in seconds.
GitHub Polls - Polls for GitHub issues and readme
poll.ly - your perfect partner to gather ideas and opinions in real time
Curious Polls - Answer a question once a day for the chance to win £100/$100
TiniPoll - Free online polling platform for remote meetings, lectures, online events, webinars or just for fun.