Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Slinky - Your slack links — organized!
Obie.ai - Access knowledge quicker without leaving Slack
Slack It - A bookmarklet to share links in Slack with one click
Slicki - The Wiki for Slack. Build documentation from conversation.
Top Daily Hunts in Slack - A simple, fast way to browse news within Slack