Officely - The only desk booking tool that lives in Slack
Clerk Chat - SMS for Slack
OfficeMixer - Automated office bookings
Cato - Instant Spotlight-like search for your web browser.
RobinPowered - Robin coordinates meeting spaces, people, and things in your office. Complete with analytics and insights that uncover usage and help optimize space.
Slack App Directory - Your go-to for finding apps that work with Slack