Scheduling infrastructure for absolutely everyone.

The open source Calendly alternative. You are in charge of your own data, workflow and appearance.

Open Krishnan Calendars

“ changed the game with their open source model. But why should you pay for premium features. This site is free. I call it freesourcing open source.”

Ajay Krishnan
Lawyer who codes

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Scheduling tools are awesome. We're using them for business meetings, seminars, yoga classes and even calls
with our families. But most tools are very limited in terms of control and customisations.


100% white label

For most teams, scheduling is a core part of the product. We get rid of any design restrictions that come with alternatives.


100% in control

You are in control of your events, customer data, workflow and costs. The open core of offers you to make or request changes quickly.


100% customizable

Integrate Cal with your platform using our open API, built in customisation options and range of embed options. Perfect as infrastructure.


100% privacy is a HIPAA, DSGVO, GDPR and CCPA compliant calendly alternative that also runs on AWS GovCloud or Google Cloud for Goverment.