✓ VERIFIED GTM · 76★ 4.6 · 154 G2 reviews
Cal.com
CRM & SalesOpen-source Calendly alternative with full customization, team scheduling, round-robin, and self-hosting option — the scheduling tool developers love.
Cal.com is an open-source scheduling infrastructure platform (AGPLv3) that serves as a powerful alternative to Calendly, offering both hosted SaaS and self-hosting capabilities for complete control over scheduling data. Its free tier is remarkably generous with unlimited bookings, event types, workflows, and payment processing via Stripe and PayPal, while its developer-first approach provides a REST API, webhooks, and React-based components (Atoms) for embedding scheduling into custom applications. Paid plans unlock round-robin scheduling, team routing, and enterprise compliance certifications including SOC 2, ISO 27001, and HIPAA, with 70+ integrations and 99.99% uptime SLA.
Best for
Developer teams and privacy-conscious organizations that need open-source scheduling infrastructure with self-hosting capabilities and extensive API customization.
Editorial profile generated February 23, 2026 · pricing & endpoint re-verified continuously (see badges above)
24/50
Overall Score
API Quality
10/10
GTM Relevance
14/20
PricingFreemium
Complexityhard
Learningeasy
Visit cal.com →API Analysis
REST API
✓
Available
Webhooks
✓
Available
GraphQL
—
—
OAuth
—
—
salesforcehubspotstripezapierslackgmailoutlook
Pricing
freemiumFree Tier
Free for individuals, Team $15/user/mo, Enterprise $37/user/mo
Listed pricing, as of Feb 2026 — not independently verified; confirm on the vendor's site before relying on it.
What users say
Themes from 154 real reviews on G2 · ★ 4.6
Users like
Clean and modern design with intuitive user experience
Flexible customization and self-hosting options
Good integrations with existing tools like Google, Zoom, and Salesforce
Users dislike
Limited specific user complaints visible on this page
4% of users gave 3-star or lower ratings
Alternatives
Reviews
Links
FAQ
What is Cal.com?
Cal.com is an open-source scheduling infrastructure platform (AGPLv3) that serves as a powerful alternative to Calendly, offering both hosted SaaS and self-hosting capabilities for complete control over scheduling data. Its free tier is remarkably generous with unlimited bookings, event types, workflows, and payment processing via Stripe and PayPal, while its developer-first approach provides a REST API, webhooks, and React-based components (Atoms) for embedding scheduling into custom applications. Paid plans unlock round-robin scheduling, team routing, and enterprise compliance certifications including SOC 2, ISO 27001, and HIPAA, with 70+ integrations and 99.99% uptime SLA.
Is Cal.com free?
Yes, Cal.com offers a free tier. Free for individuals, Team $15/user/mo, Enterprise $37/user/mo Pricing shown is as last reviewed and may change — confirm current pricing on the vendor's site.
What are Cal.com alternatives?
Popular alternatives to Cal.com include Calendly, SavvyCal, YouCanBookMe, Acuity Scheduling, TidyCal, Koalendar. Compare features, API quality, and pricing on GTM Tools.
Does Cal.com have an API?
Yes, Cal.com provides a REST API. API quality is rated EXCELLENT. Documentation: https://cal.com/docs/api-reference/v2/introduction.
Who is Cal.com best for?
Developer teams and privacy-conscious organizations that need open-source scheduling infrastructure with self-hosting capabilities and extensive API customization.
How current is Cal.com's data on GTM Tools?
Endpoint reachability and pricing for verified-tier tools are re-checked on a schedule — see the verification badges on this page for the latest check. The editorial profile (description, strengths and weaknesses) is last generated February 2026, and any user-review themes are pulled from G2.