Slinky - Your slack links — organized!
Lurchr - Saves all your Slack links, so you can focus on work
Slack It - A bookmarklet to share links in Slack with one click
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Top Daily Hunts in Slack - A simple, fast way to browse news within Slack
Slack-News - Read news from multiple sources within Slack by just typing