Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
Trello for Slack - Organize anything with anyone, inside Slack
x.ai - x.ai is a tool to schedule meetings for you and your team.
Halp - Slack-first ticketing for internal helpdesk