WhosDown - App where you can genuinely make friends—connecting with someone that shares a common interest
Twitter Polls - Polls embedded in tweets
Meetup for iOS and Android - Discover groups that are all about the things you love
Curious Polls - Answer a question once a day for the chance to win £100/$100
MEETplnr - Organize meetups in your chat groups with ease
Simple Poll - The easiest way to create polls in Slack