Cal.com by Cal.com
Cal.com is an open-source scheduling platform you can self-host or use in the cloud. It suits operators who want booking they can customize and control.
Pricing: Freemium — Open-source; self-host free or use paid cloud/team plans.
Alternatives
Acuity Scheduling alternatives
Comparable Scheduling & booking tools. Summaries are original; pricing shown is each vendor's public model, not a quote.
Acuity Scheduling: Acuity Scheduling (by Squarespace) handles online booking, intake forms, and automated reminders. It fits service businesses that want booking plus simple client intake in one tool.
Calendly by Calendly
Calendly lets clients self-book available time slots that sync to your calendar, cutting the back-and-forth of scheduling. It is a fast way to add online booking without replacing your whole practice system.
Pricing: Freemium — Free tier plus per-seat paid plans; see vendor pricing page.
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