Can I open-source Calendly?
YES · mature open-source replacementYes. Cal.com (37k stars) is mature open-source replacement for Calendly — self-host with docker and stop paying $12/mo.
They pay because double-booking or missed meeting invites is costly.
xpolished Google/Outlook OAuth kept working for you
xteam round-robin and routing
xSMS reminders
xthe integrations directory
These projects already replace it, free.
CCal.comOpen scheduling infrastructure with booking pages, round-robin, routing forms, and app integrationsopen source↗What each one is, in full: Cal.com
no votes, no pay-to-list · just what's real
Calendly pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| free | $0/user | $0/user | 1 one-on-one event type, 1 connected calendar and unlimited scheduled meetings. |
| standard | $12/user | $10/user | Unlimited event types; connect up to 6 calendars; 1 seat per paid user. |
| teams | $20/user | $16/user | Unlimited event types; up to 6 connected calendars; round-robin and routing. |
| enterprise | — | $1250/workspace | Starts at a $15,000 annual contract; numeric user and event limits are custom. |
free tier1 one-on-one event type, 1 connected calendar and unlimited meetings.
billingmonthly + annual; 14-day paid-plan trial falls back to Free; Enterprise starts at $15,000/year
hidden costsEvery owner and admin occupies a paid seat; newly added seats are prorated and all users in one organization must share a plan. SAML SSO is a paid add-on with no public price.
verified 2026-08-11 · source ↗
Is Calendly free?
The free plan covers one event type on one connected calendar. Paid is Standard at $12/mo (checked 2026-08-07).
Can I open-source Calendly?
Yes. Cal.com replaces Calendly today — self-host it on your own server or machine with no subscription. The full list of open-source alternatives is on this page.
How much does Calendly cost?
Calendly costs about $12/month (Standard, checked 2026-08-07), which is $144 per year. That's what you save by replacing it with open source.
What do I lose by replacing Calendly?
Honestly: polished Google/Outlook OAuth kept working for you; team round-robin and routing; SMS reminders; the integrations directory. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Calendly?
Yes: Cal.com (Open scheduling infrastructure with booking pages, round-robin, routing forms, and app integrations)