RightGIF - Less noise, better GIFs. A better /giphy for Slack.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
VixT on Slack - The best video mashup app now on Slack.
Heartbeat - Listen to music with your friends together, on Spotify
Slack Meme Bot - Spice up your team conversations with memes
Partyhero - Pass your friends the aux!