Kalendar.work
UnclaimedA free and open-source scheduling tool offering premium features without the cost.
Visit WebsiteTL;DR - Kalendar.work
- Free, open-source scheduling tool rivaling Calendly and Cal.com at zero cost
- Custom branding, two-way calendar sync, and unlimited event types included
- Self-hostable with no credit card, no premium tier, and no usage limits
Pricing: Free forever
Best for: Individuals & startups
4.1/5 across review platforms
Pros & Cons
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
- Active development with Product Hunt recognition
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
Ratings Across the Web
4.1(24 reviews)
Ratings aggregated from independent review platforms. Learn more
Key Features
Free and open-source scheduling platformCustom-branded booking pagesUnlimited event types and meeting configurationsTwo-way sync with Google Calendar and OutlookBranded email notifications and remindersFlexible availability settings with buffer timesAttendee rescheduling and cancellation self-serviceSelf-hostable codebase for full controlNo credit card required — free foreverMobile-responsive booking pages
Pricing
Free
Kalendar.work is completely free to use with no hidden costs.
About Kalendar.work
By Toolradar Team·
Kalendar is a free, open-source scheduling tool built as an alternative to paid services like Calendly and Cal.com. It lets users create professional branded booking pages where others can schedule meetings, with two-way calendar sync for Google Calendar and Outlook. Kalendar supports unlimited event types, customizable availability with buffer times, branded email notifications, and attendee self-service rescheduling. The platform is self-hostable and charges nothing — positioning itself against competitors that charge $15-30/month for similar features. Built by Founding.dev and featured on Product Hunt.
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Kalendar.work FAQ
Is Kalendar.work really free?
Yes. Kalendar is completely free forever with no credit card required. There is no premium tier. The project is open-source, so you can also self-host it at no cost.
How does Kalendar compare to Calendly?
Kalendar offers similar core features — booking pages, calendar sync, email reminders, custom branding — but at zero cost. Calendly charges $10-16/month per seat for comparable functionality.
What calendars does Kalendar sync with?
Kalendar supports two-way sync with Google Calendar and Microsoft Outlook, preventing double-booking across your connected calendars.
Can I self-host Kalendar?
Yes. Kalendar is open-source, and you can self-host it on your own infrastructure for complete data ownership and control.
Who built Kalendar?
Kalendar was built by Founding.dev and has been featured on Product Hunt. It is actively maintained and developed.
Source: kalendar.work