Decision Jam - Make better decisions quickly with your team
ToT: ThisOrThat - Let your friends choose this or that for you
Acquainted - A simple tool to create conversational polls and surveys
sup - The first creep-free way to see nearby friends
Simple Poll - The easiest way to create polls in Slack
Mu4e - Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.