Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Must-Read for Slack - Build controllable must-read lists for your team in Slack.
Slinky - Your slack links — organized!
Votum for Slack - Crowdsourced lists with upvotes, inside Slack
Fastgrep - Find and organize your Slack team's links and files
Short - The reading list for busy people