# Cal.com free for open source

What Cal.com gives open source projects, who qualifies, and how to apply. 1 verified offer, last checked 2026-09-07.

- Website: https://cal.com
- Categories: project management, more tools

## Cal.com OSS sponsorship (sponsored team plan)

**What you get.** Sponsored (free) access to Cal.com's paid team offering for open source projects (applicants provide their Cal.com team slug); exact plan tier is not specified on the page. In exchange the project must display a "Book us with Cal.com" banner in its footer and README with UTM-tagged links.

**Who qualifies.** Applies to the project. Project must be open source and non-commercial, or a commercial open source company with less than $2M ARR; must explain why the generic free tier / self-hosted open core is insufficient. Limited openings per month; requests reviewed monthly at Cal.com's discretion.

**How to apply.** Email peer@cal.com with project description, confirmation of criteria, why the free tier is insufficient, your Cal.com team slug, and a link to the repository.

Program page: https://cal.com/help/event-types/sponsor

Verified 2026-09-07 - manual: cal.com/help/event-types/sponsor live, OSS sponsorship terms (<$2M ARR, banner requirement, monthly review)

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