CWhat it is
Scheduling infrastructure for absolutely everyone. Review the official repository, license, release activity, and deployment documentation before production adoption. GitHub popularity snapshot captured on 2026-07-16: 46,445 stars and 14,448 forks.
Teams can evaluate Cal.com as an open alternative to Calendly while keeping the implementation, license, and repository signals visible. Confirm the official documentation against your exact workflow before treating it as a production dependency.
- Categories
Data & Analytics
Who it’s for — and when to skip it
Data teams
Use it when you need transparent storage, processing, querying, or reporting behavior.
Skip if your required connectors or governance controls are not documented.
Backend engineers
Consider it when the data model and APIs can remain portable across your infrastructure.
Skip if migration and backup procedures are unclear.
Analytics owners
Evaluate it when access to queries and source code is more valuable than a closed dashboard workflow.
Skip if nontechnical operators require a fully managed support model.
Strengths and trade-offs
Why teams consider it
typescript
open-source
nextjs
Source code and MIT license are visible before adoption
Repository activity is available as a current maintenance signal
What to validate
A public repository does not automatically guarantee a documented self-hosting path
GitHub popularity is not a security, quality, or product-fit guarantee
The MIT license still needs review against your distribution and commercial model
Support quality, migration effort, and production hardening vary by project
Pricing
Free self-hosted; Cal.com Cloud plans available
Scheduling. Open-source self-host is free; hosted plans add managed infrastructure and team features.
Self-hosted
$0 softwareOpen source + infra- Core scheduling
- You run the stack
- Community edition
Cloud
Free + paid tiersHosted- Managed Cal.com
- Team and org features
- See official page
Capabilities and stack fit
Catalog metadata supports discovery, not installation. Verify supported versions, dependencies, deployment topology, and production requirements in the official repository.
Guides for Cal.com
Use the learning library to find a guide by technology, category, or difficulty.
Browse guidesRelated articles
Approved community reviews
We do not display synthetic testimonials or ratings without sufficient moderated data.
Before you adopt it
- 01
Read the license and confirm it fits your intended use and distribution model.
- 02
Review recent commits, open issues, releases, and the maintainer response pattern.
- 03
Run a small proof of concept with representative data, users, and integrations.
- 04
Confirm whether an official deployment or self-hosting guide exists.
- 05
Document an export or migration path before storing critical data.
