OneBar - AI-powered Q&A knowledge base for Slack teams
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Whatis - Manage & organize your team's knowledge straight from Slack
Linkpack - Save, read and share your links
Pocket - When you find something you want to view later, put it in Pocket.
PigeonBot - Send emails via Slack with the /email command