calendly

Calendly is a scheduling automation platform founded in 2013. Its software removes the back-and-forth of meeting coordination: users connect their calendars, set availability, and share or embed scheduling links that allow others to book time directly. Meetings range from short check-ins to complex team arrangements. The company began as a bootstrapped venture and is now valued at $3 billion.

The platform integrates with more than 100 tools, including Google, Outlook, Salesforce and Slack, which places it within sales, recruiting, customer success and marketing workflows rather than in a single functional silo. Technical work centres on scheduling automation, calendar integration, workflow automation and availability management, alongside web-embeddable scheduling links and third-party software connections. Calendly processes millions of bookings.

Scale is substantial. More than 20 million users across over 230 countries use the product, as do more than 100,000 companies; 86% of the Fortune 500 are among them. The stated mission is to make finding time effortless for individuals and teams, with an emphasis on saving time, eliminating email tag and intuitive product design.