Slack Meme Bot - Spice up your team conversations with memes
Koel - A personal music streaming server that works.
GoGifApp - Free Slack GIFs App, multiple images to pick from at once
longplay.in - Curated indie music from Bandcamp
VixT on Slack - The best video mashup app now on Slack.
Vibent - Your favorite music livestreams in one place