slack-fm - Self-hosted service to sync Last.fm with your Slack status
Slack Status Icons - A custom set of status emojis for Slack
Webfont - Easily create and maintain custom SVG icon fonts
JQBX - turntable.fm for spotify
IcoMoon - IcoMoon is an icon management tool that is build to provide iconography.
Jukebot - Turn Slack into your team's very own Spotify jukebox