Twitter Polls - Polls embedded in tweets
minipoll - Create simple shareable polls in seconds
GitHub Polls - Polls for GitHub issues and readme
Polls for iMessage - Group Decisions Made Easy. Create polls, vote, and view the results directly in iMessage. The easiest way to make any group decision.
Simple Poll - The easiest way to create polls in Slack
Twitter Ads - Twitter offers targeted ad placement on their ad platform.