Slack News Feed - Get the top posts from every Slack chat you're in.
Clara - Clara is a virtual employee that schedules your meetings, getting you to the work that matters, faster.
Lurchr - Saves all your Slack links, so you can focus on work
Mia - Virtual assistant for meetings
Slack It - A bookmarklet to share links in Slack with one click
Mastermind Manager - Software for running mastermind groups