OneBar - AI-powered Q&A knowledge base for Slack teams
Whatis - Manage & organize your team's knowledge straight from Slack
Pingpad for Slack - For Slack teams to capture knowledge, organize and act on it
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
DoSheets - Building blocks for your business
PigeonBot - Send emails via Slack with the /email command