Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Slack News Feed - Get the top posts from every Slack chat you're in.
Slinky - Your slack links — organized!
Product Slack - The daily top hunts on Product Hunt, delivered to your Slack
Paperbot (Reloaded) - Slack meets Pocket
Opera - Version 26 - Now includes easy bookmark sharing