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!
Obie.ai - Access knowledge quicker without leaving Slack
Fastgrep - Find and organize your Slack team's links and files
MovetoSlack - Migrate from MS Teams to Slack in 5 minutes