Obie.ai - Access knowledge quicker without leaving Slack
WebCull - WebCull is an ad-free, privacy-focused bookmark manager that works from any browser or device.
Fastgrep - Find and organize your Slack team's links and files
Pocket - When you find something you want to view later, put it in Pocket.
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
LARDER - Bookmarking for developers