OneBar - AI-powered Q&A knowledge base for Slack teams
Lurchr - Saves all your Slack links, so you can focus on work
Whatis - Manage & organize your team's knowledge straight from Slack
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.
PigeonBot - Send emails via Slack with the /email command