Scheduling

Cal.com

Booking pages you can host, in the same job as Calendly.

Partial score

8/19 signals

Why this score

Not enough measured signals for Owner-safe, and the score is outside the Needs-a-techie band. Captured 2026-10-15. Unmeasured signals add nothing and are not treated as failures.

Alive14/20

Last push. 8 points. GitHub pushed_at was 18 days before 2026-10-15.
Releases in 12 months. 6 points. The public releases feed shows at least 10 tagged releases in the last 12 months.
How fast issues close. Not measured. Median issue-close time is not in the seed snapshot, so this signal is omitted.

Trusted2/20

OpenSSF Scorecard. Not measured. No Scorecard result in the snapshot.
Open critical or high vulnerabilities. Not measured. Open vulnerability counts were not fetched. We do not assume zero.
Contributors in 90 days. Not measured. 90-day contributor counts were not fetched.
Bus factor. Not measured. Contributor share was not fetched.
Stars. 2 points. 49,001 stars, log-scaled and capped at 20,000.

Takeoverable13.8/25

Licence. 10 points. Licence class permissive.
Stack. 3.8 points. TypeScript. TypeScript, JavaScript, Python, Go, PHP, and Vue score as widely hireable.
Tests and CI. Not measured. We did not confirm a test suite. Missing CI at the usual paths is treated as unknown, not as a failure.
Docs quality. Not measured. Docs quality is an LLM rubric. v1 does not invent that score.
Data export. Not measured. Data-export was not audited app by app, so it is omitted.

Easy to run9/20

One-click deploy. Not measured. No one-click host was verified for this app, so the signal is omitted rather than scored as a failure.
Managed cloud or done-for-you. 5 points. SeatLess offers done-for-you setup. A vendor cloud, where listed, is the vendor’s own hosting, not a licence you own.
Docker Compose. 4 points. A Dockerfile or Compose file is in the repository.
Memory needs. Not measured. Memory needs were not measured.
Setup steps. Not measured. Setup-step rubric was not run.

Feature fit13.5/15

Coverage of the incumbent’s main jobs. 13.5 points. Editorial reading of public docs. Not a certified feature audit. Unknown jobs are left out of the average.

What it replaces

Cal.com is scheduling infrastructure: booking links, calendar connections, and team events. GitHub reports the repository as MIT. The repository homepage field points at cal.diy. Confirm the current licence file before you build a product on a fork.

Replaces Calendly

Feature coverage vs Calendly

Editorial, from public descriptions. A dash means we did not assess that job. This is not a lab test, and Calendly has not reviewed it.

Job	Cal.com
Personal booking page	✓
Calendar sync	✓
Team scheduling	✓
Email reminders	✓
Paid bookings	◐

Licence, in plain language

MIT Permissive

You can use it, change it, and keep your copy, including inside a product you sell, as long as you keep the copyright notice.

GitHub’s detected SPDX licence is MIT, checked 15 Oct 2026. Read the licence file; commercial features have moved around this project before.

Repository health

Stars	49,001
Forks	15,345
Open issues	1,508
Last push	2026-09-26
Last tagged release	2026-03-01
Releases in 12 months	10 or more
OpenSSF Scorecard	Not in the snapshot
Language	TypeScript
Archived	No

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