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Kalendar.work

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A free and open-source scheduling tool offering premium features without the cost.

Meeting SchedulingProductivityCalendar
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Reviews onG2
24 reviews tracked

The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Completely free with no premium tier or usage limits

Biggest con

Smaller community compared to Calendly or Cal.com

TL;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

What is Kalendar.work?

Editorial review
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.

Available on: Web

how we evaluateSourcekalendar.work ↗

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)
G224 reviews
4.1/5

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.

View pricing

Reviews

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4.1/5

Across 24 verified user reviews on G2

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Best Kalendar.work Alternatives

Top alternatives based on features, pricing, and user needs.

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DoodleFreemium

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4.5
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SetmoreFreemium

Automate bookings and reduce no-shows with 24/7 self-scheduling

4.6
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SimplyBook.meFreemium

24/7 booking, payments, and client management for service businesses

4.5
Appointy logo
AppointyFreemium

Simplify scheduling, automate tasks, and grow your business with an all-in-one online appointment system.

4.1
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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

All Kalendar.work alternatives6+ tools ranked, pricing + verdict per pickKalendar.work vs Acuity SchedulingHead-to-head: features, pricing, who winsKalendar.work vs CalendlyHead-to-head: features, pricing, who winsKalendar.work vs DoodleHead-to-head: features, pricing, who wins

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Kalendar.work FAQ

How does Kalendar.work help manage meeting schedules?

Kalendar.work allows users to create professional, branded booking pages where others can schedule meetings. It features two-way calendar synchronization with Google Calendar and Outlook to prevent double-booking. Users can also set up unlimited event types and customize their availability with buffer times.

How is Kalendar.work priced?

Kalendar.work is completely free to use, offering all its features without any cost. There are no premium tiers or usage limits, and it is positioned as an open-source alternative to paid scheduling services.

What kind of user benefits most from Kalendar.work?

Individual professionals or small businesses looking for a robust scheduling solution without subscription costs would benefit most. Its self-hostable nature also appeals to users who prioritize maximum control over their data and infrastructure.

How does Kalendar.work compare to Calendly?

Kalendar.work offers full feature parity with services like Calendly, including customizable booking pages, unlimited event types, and two-way calendar sync, but without any monthly fees. Unlike Calendly, Kalendar.work is open-source and self-hostable, providing greater control to the user.

What are the main trade-offs when choosing Kalendar.work?

A primary trade-off is that self-hosting Kalendar.work requires technical setup and ongoing maintenance. Additionally, it currently has fewer third-party integrations and lacks native payment collection or team scheduling features compared to more established platforms.

Can Kalendar.work integrate with existing calendars?

Yes, Kalendar.work offers two-way calendar synchronization with both Google Calendar and Outlook. This integration helps prevent scheduling conflicts and ensures availability is always up-to-date across different platforms.

Does Kalendar.work allow for custom branding on booking pages?

Yes, Kalendar.work supports custom branding on both booking pages and email notifications. This allows users to maintain a consistent professional appearance for their scheduling interactions.

Source: kalendar.work

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