Kalendar.work
Kalendar is a free, open-source scheduling tool built as an alternative to paid services like Calendly and Cal.com.
Free tierVisit site ↗
Our verdict
Who it's for
A free and open-source scheduling tool offering premium features without the cost.
Who should look elsewhere
Smaller community compared to Calendly or Cal.com
Pros
- +Completely free with no premium tier or usage limits
- +Open-source and self-hostable for maximum control
- +Full feature parity with $15-30/month competitors
- +Custom branding on booking pages and emails
- +Two-way sync prevents double-booking across calendars
Cons
- −Smaller community compared to Calendly or Cal.com
- −Self-hosting requires technical setup and maintenance
- −Limited third-party integrations compared to established players
- −No native payment collection for paid appointments
- −No team scheduling or round-robin assignment features yet
Key features
- ✓Free and open-source scheduling platform
- ✓Custom-branded booking pages
- ✓Unlimited event types and meeting configurations
- ✓Two-way sync with Google Calendar and Outlook
- ✓Branded email notifications and reminders
- ✓Flexible availability settings with buffer times
- ✓Attendee rescheduling and cancellation self-service
- ✓Self-hostable codebase for full control
- ✓No credit card required, free forever
- ✓Mobile-responsive booking pages
Pricing
No public pricing plans recorded.