Cal.com
Open-source scheduling infrastructure you can self-host
4.5Free / from $15/user/moBest for Teams wanting scheduling under their own brand and control
Scheduling Open Source API
Overview
Cal.com is the open-source alternative to Calendly: booking pages, team round-robin and collective events, routing forms and workflows, with the code on GitHub and options to self-host or embed scheduling into your own products via API. Individuals schedule free forever. For funds, the draw is control — white-label booking under your own domain, data residency on your terms, and scheduling embedded into portals or platform tools without vendor lock-in.
Key features
- Booking pages with unlimited event types
- Team round-robin and collective scheduling
- Routing forms for qualifying and directing bookings
- Open-source codebase with self-hosting option
- Scheduling API and embeddable components
- Workflows for reminders and follow-ups
Pros
- Open source removes lock-in and enables full white-labeling
- Generous free tier for individual investors
- API-first design suits embedding in fund platforms
Cons
- Self-hosting shifts maintenance burden onto you
- Some polish and integrations still trail Calendly