Slackbox - Spotify playlist collaboration through Slack
DroidCam - DroidCam – Use your Android phone as a wireless webcam or an IP Cam!
RightGIF - Less noise, better GIFs. A better /giphy for Slack.
Iriun Webcam - Use your phone's camera as a wireless webcam in your PC or Mac.
Remixatron - Infinite Jukebox on the command line in Python.
iVCam - iVCam transforms your Mobile Phone / Pad into a webcam for Windows PC.