Twitter Polls - Polls embedded in tweets
Tally.so - The simplest way to create forms, for free.
Simple Poll - The easiest way to create polls in Slack
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.
Polls for WhatsApp - Create & share quick polls in your WhatsApp groups
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.