Boolean - Send single question yes/no surveys
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
Wizu - Wizu is a conversational User Interface that can measure, and help companies improve, customer experience
Padlet - Visual boards for organizing anything.
Hubert.ai - Hubert+1 - Add more to your team
Simple Poll - The easiest way to create polls in Slack