Simple Poll - The easiest way to create polls in Slack
Facebook Live Trivia Game - Run your own trivia games on Facebook Live 🎮
Curious Polls - Answer a question once a day for the chance to win £100/$100
Zelos.gg - Win prizes while playing games
Urbanpinion - Citizens engagement platform that lets you create a landing page with an interactive map in just a few steps, launch a survey and collect citizens' ideas and votes - and make the right decisions for the city development.
2 Truths & a Lie - Three statements.