Cal.com
Open scheduling infrastructure for absolutely everyone
Founded
2021
Starting Price
$0
Category
Productivity
Last updated March 4, 2026
About Cal.com
Cal.com is an open-source scheduling platform that serves as the infrastructure layer for appointment booking. With 40K+ GitHub stars, it offers everything from simple 1:1 bookings to complex team scheduling with round-robin, routing forms, and built-in video conferencing. Available as cloud-hosted or fully self-hosted.
Pros & Cons
Pros
- Fully open-source with 40K+ GitHub stars and active community
- Generous free tier with unlimited bookings — no artificial limits
- Self-hosting option for complete data ownership and privacy
- API-first design makes it the easiest scheduling tool to integrate
- Built-in video conferencing eliminates need for separate tools
Key Features
Unlimited Bookings
Schedule unlimited meetings across all plans with no caps on booking volume.
Round-Robin Scheduling
Automatically distribute meetings across team members based on availability and workload.
Cal Video
Built-in video conferencing with privacy controls, recording options, and automatic transcription.
Routing Forms
Qualify and route leads to the right team member based on form responses before booking.
API-First Architecture
Comprehensive API for deep integrations with CRMs, email marketing tools, and custom applications.
Calendar Integrations
Sync with Google Calendar, Outlook, Apple Calendar, and other major calendar providers.
Self-Hosting
Deploy on your own infrastructure with full source code access and complete data ownership.
Pricing
Free
$0
- Unlimited bookings
- Basic scheduling
- Calendar sync
- Cal.com branding
- Community support
Best For
Sales Team Scheduling
Route inbound leads to the right sales rep with round-robin distribution and qualification forms.
Customer Success Meetings
Let customers book support calls, onboarding sessions, and check-ins through branded booking pages.
SaaS Scheduling Infrastructure
Embed Cal.com's API into your product to offer scheduling features to your own users.
Freelancer & Consultant Bookings
Share a clean booking link for client consultations with automatic calendar sync and reminders.
Similar Tools
Featured In
#2
7 Best Calendar & Scheduling Tools for Busy Professionals (2026)
Best free and open-source option for professionals who want unlimited scheduling without monthly costs, plus self-hosting for full data control.
#3
5 Calendly Alternatives With Better Team Scheduling (2026)
Best open-source Calendly alternative — self-hostable, fair team pricing, ideal for engineering-led companies.
