OneBar - AI-powered Q&A knowledge base for Slack teams
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
PigeonBot - Send emails via Slack with the /email command
Obie.ai - Access knowledge quicker without leaving Slack
QuickQ - Internal Q&A platform for Slack
Pingpad for Slack - For Slack teams to capture knowledge, organize and act on it