WenPay.me - WenPay makes it easy to send payment requests that should be paid in cryptocurrencies.
Twitter Polls - Polls embedded in tweets
Pop - Super fast, lo-fi video texting with close friends
Simple Poll - The easiest way to create polls in Slack
SendCrypto - The Social Crypto Payments Bot
Curious Polls - Answer a question once a day for the chance to win £100/$100