What does Cal.com replace?

Cal.com is a free alternative to Calendly ($120/yr).

Is Cal.com open source?

Yes. Cal.com is licensed under MIT, an OSI-approved open-source license.

Yes (self-hosted server; web UI).

Yes. Cal.com is a server app you run on your own server, and its repository includes Docker files.

A free, open-source alternative to Calendly. Switching saves $120/yr at list price.

Checked Oct 17, 2026 · How we check

Self-hosted server

Open source · MIT Linux Self-hostable

calcom/cal.diy49.0k★last push Sep 26, 2026checked Oct 17, 2026

GitHub redirects calcom/cal.com -> calcom/cal.diy (checked 2026-10-17); verify project status before listing

Self-host

Runs on your own Linux server, with Docker files in the repo. Setup docs are on cal.com.

What does Cal.com replace?: Cal.com is a free alternative to Calendly ($120/yr).
Is Cal.com open source?: Yes. Cal.com is licensed under MIT, an OSI-approved open-source license.
Does Cal.com run on Linux?: Yes (self-hosted server; web UI).
Can you self-host Cal.com?: Yes. Cal.com is a server app you run on your own server, and its repository includes Docker files.