Best offer on record: Free plan ('Free forever'). 3 verified findings, checked 2026-10-22.
Live check of “Self-hosted Cal.com under MIT (free software, self-hosted)”:Partly confirmed
As of 2026-10-22 the offer is free ($0) and MIT-licensed, but it is no longer "Cal.com": on 15 April 2026 Cal.com moved its production code to a private repository (closed source) and relicensed the public, self-hostable codebase from AGPL-3.0 to MIT under a separate community edition called Cal.diy (github.com/calcom/cal.diy, no license key or Cal.com account required). Cal.diy is feature-reduced (Teams/Organizations, Routing Forms, Workflows, Insights, SSO/SAML, API v1 and other Enterprise features removed) and Cal.com explicitly recommends it for personal, non-production use only — commercial self-hosting of the full Cal.com product now requires an Enterprise license through cal.com/sales.
Official pricing page lists a Free plan at price 'free' ('Free forever') for a single user, with the line 'Start scheduling for free, with no usage limits.' The page states no cap on event types or calendars and no booking cap; API access is not listed for this plan. No student, education or startup discount is attached to it.
Eligibility
Any individual. The pricing page states no .edu email requirement, startup age or funding cap, or region limit. Single user only.
How to claim
1) Open https://cal.com/pricing/. 2) Choose the Free plan. 3) Sign up for an account. The page describes no code, application or verification step.
Expiry
None stated; the page describes the plan as 'Free forever' (read 2026-10-22).
Gotchas
Single user only; team scheduling needs the Teams plan at $12 per user per month on yearly billing (see next finding). Credit card requirement is not stated on the page; confirm at signup. The page states no booking cap, which is not a guarantee of unlimited bookings. API access is not listed, so Platform/API use is not covered by this plan.
14-day free trial on Teams and Organizations high confidence
Official pricing page states a '14 day free trial' for Teams and Organizations. Teams: $12 per user per month on yearly billing (page says 25% savings). Organizations: $28 per user per month on yearly billing (25% savings). Enterprise is custom via sales. No trial credits or discount codes are mentioned.
Eligibility
Not stated on the pricing page. No .edu, startup or region rule is mentioned for the trial.
How to claim
1) Open https://cal.com/pricing/. 2) Choose Teams or Organizations. 3) Start the 14-day free trial from the signup flow. The page describes no code or application step.
Expiry
Trial lasts 14 days from start, then bills at the plan rate.
Gotchas
Time-limited, not free forever: it converts to paid billing after 14 days. Quoted rates are per user on yearly billing; the page implies a higher monthly rate, but the exact monthly price was not captured. Credit card requirement and cancellation terms for the trial are not stated on the page; verify at signup. Enterprise pricing is sales-only.
Self-hosted Cal.com under MIT (free software, self-hosted) high confidence
The LICENSE file in the calcom/cal.diy repository reads 'MIT License' with 'Copyright (c) 2020-present Cal.com, Inc.' and has no second license notice for enterprise or ee code. The GitHub page served at calcom/cal.com describes Cal.diy as 'fully open source, licensed under the MIT License' with 'no commercial/enterprise code'.
Eligibility
Anyone. No student, startup, region or company-size gate was found. The user pays for their own hosting and operations.
How to claim
1) Get the source from the calcom/cal.diy repository on GitHub. 2) Deploy it on your own infrastructure. 3) Keep the MIT copyright notice when redistributing.
Expiry
No time limit; the MIT license has no expiry.
Gotchas
Conflicts with the brief's 'AGPLv3' note: the current official LICENSE is MIT, so the brief appears outdated. The date of the change could not be established. Self-hosting costs (servers, database, email/SMS, maintenance) are the user's. The repo states it has no commercial/enterprise code; which paid-tier features are absent from it was not checked.