Cal.com
Open-source scheduling infrastructure that gives you full control over your booking experience.
Overview
Cal.com is the open-source alternative to Calendly, offering the same core scheduling functionality with full transparency and self-hosting options. It supports multiple calendar integrations, team scheduling, custom workflows, and embeddable booking widgets.
The free tier on the hosted platform is generous with unlimited event types and bookings. The Team plan at $12/user/month adds team features, and self-hosting is completely free with no per-user fees.
Strengths
- Fully open source with self-hosting option
- Unlimited event types and bookings on free tier
- Highly customizable with API and webhooks
- No per-user cost when self-hosted
Weaknesses
- Self-hosting requires technical setup and maintenance
- Smaller integration ecosystem than Calendly
- Less brand recognition — invitees may not recognize it
- Some advanced features still catching up to Calendly
Pricing estimate
$120
/month
$1440/year
Free with unlimited event types, self-host for free
Quick info
- Category
- Scheduling
- Starting price
- $12/user/mo
- Free tier
- Yes — Free with unlimited event types, self-host for free
- Open source
- Yes
- Best for
- Any size
- Founded
- 2021
Last updated 2026-04-12
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