Gource - Gource is a software version control visualization tool.
RightGIF - Less noise, better GIFs. A better /giphy for Slack.
Codeology - Open-source algorithm that visualizes GitHub projects
Firesong - Giphy for Music in Slack w/ Emoji Search
The GitHub Matrix Screensaver - Latest commits from GitHub visualized Matrix-style
Slack Meme Bot - Spice up your team conversations with memes