Cal.com

Open-source scheduling — free, self-hostable, and privacy-first

schedulingFree planSetup: simple

8.5

AppAdvize Score

out of 10 · How we score

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Reviewed by the AppAdvize editorial team · last verified March 2026

Overview

Cal.com is an open-source scheduling platform that positions itself as the privacy-respecting, developer-friendly alternative to Calendly. The cloud-hosted version has a generous free plan; the self-hosted version is completely free. Cal.com supports all the core scheduling scenarios — 1:1 booking, round-robin team routing, collective events, and paid bookings via Stripe. Its API and embeddability make it popular with developers and tech-forward businesses. The routing forms feature directs bookers to the right team member based on answers.

Pros & Cons

What we like

✓Open source — self-host for complete data ownership and zero cost
✓Generous cloud free plan with no artificial booking limits
✓Round-robin routing, collective events, and team scheduling built in
✓Payment collection via Stripe included
✓Developer-friendly API for embedding in products

Watch out for

✕Less polished UI than Calendly in some areas
✕Self-hosting requires technical knowledge
✕Smaller community and fewer native integrations than Calendly

Best for

Privacy-conscious consultants and agencies wanting Calendly functionality without the cost
Developers wanting an embeddable, API-first scheduling solution