Headspace - Meditation made simple. Brilliant things happen in calm minds.
Slackbox - Spotify playlist collaboration through Slack
Pacifica - Stress and anxiety relief through beautiful CBT tools
RightGIF - Less noise, better GIFs. A better /giphy for Slack.
Medito - 100% Free Meditation App that will improve your Mental wellbeing with the help of Guided Meditations, Breathing Exercises, Mindfulness Practices, Relaxing Sounds, and more.
Remixatron - Infinite Jukebox on the command line in Python.