Cal.com began as the answer to an awkward search: “Calendly open source.” Five years later, its hosted product went private while a separate scheduling engine stayed public. The split tells a larger story about what a booking link becomes when it must run a business.

The electrical engineer turned go-to-market chief has spent his career translating complex software into useful moments. At OnceHub, that now means teaching AI when to schedule, when to listen, and when to bring in a human.

At Covr, the Utah founder is turning whiteboards, payroll fragments and last-minute staffing calls into an operating system for long-term care - one small decision, one visible number and one reclaimed hour at a time.
Igor Shvartsman is a technology executive associated with Breezeworks, the San Francisco company behind mobile and desktop software that helps independent service professionals - plumbers, electricians, locksmiths, appliance techs and similar trades - run scheduling, dispatch, invoicing and payments from a phone. Breezeworks launched as 'Breeze' on stage at TechCrunch Disrupt SF in 2013 and went on to raise roughly $7 million, including a $5 million Series A led by Obvious Ventures with backing from technology figures such as Marc Benioff, Max Levchin and Peter Thiel. Shvartsman is listed as chief executive of the company in current business records.
Belfry is a New York-based vertical SaaS company building the all-in-one operating system for physical security guard companies. Its platform unifies scheduling, timekeeping, GPS-tracked field operations, embedded payroll with tax filing, and automated billing - replacing the spreadsheets and stitched-together tools that security firms historically relied on. Founded in 2022 by Jordan Wallach and Alex Tulenko, Belfry serves hundreds of security businesses and raised a $12M Series A in January 2025 led by Base10 Partners.