Cal.com Review 2025
The open source alternative to Calendly
Quick Facts
Key Features
What Cal.com Does
Cal.com (formerly Calendso) is an open source scheduling tool that provides most of Calendly's features while being fully transparent, self-hostable, and more affordable. It's backed by a well-funded company and has grown rapidly.
For developers and privacy-conscious users, the ability to self-host means complete control over your scheduling data.
Key Features
Open Source: Full code available on GitHub. Know exactly what's running, contribute fixes, or customize for your needs.
Self-Hosting: Deploy on your own infrastructure. Complete data control and privacy compliance.
Generous Free Tier: The hosted version offers unlimited event types for free—far more than Calendly's one event limit.
Customization: Custom branding, embed options, and extensive API for building integrations.
Pricing
Free tier includes unlimited event types and calendars (impressive for a free option). Paid tiers ($12/user/month) add team features, workflows, and priority support. Self-hosting is free (you pay only for hosting).
Pros & Cons
Pros
- • Open source & transparent
- • Self-hosting option
- • Very generous free tier
- • Active development
- • Good API
Cons
- • Less polished than Calendly
- • Fewer enterprise integrations
- • Self-hosting requires tech skills
- • Smaller ecosystem
- • Less brand recognition
Who It's Best For
Cal.com suits developers who appreciate open source, privacy-conscious organizations, startups wanting unlimited scheduling for free, and anyone who might want to self-host.