How they compare
Punctual is not a Calendly clone — it's an answer to a narrower question: what does a scheduler look like with no seat limits, no vendor lock-in on your calendar data, and a license that can't be revoked?
| Punctual | Calendly | |
|---|---|---|
| License | MIT, open source | Proprietary, closed source |
| Self-hosting | Yes — your own Cloudflare account | Not available |
| Pricing model | Free, forever, for one team | Seat-based subscription |
| Your calendar data | Stays in your own Google/Microsoft account | Stored on the vendor's infrastructure |
| Rendering | Server-rendered at the edge, no client framework | Client-rendered SPA |
| AI agent access | Built-in MCP server | Not available |
Scroll to see the Calendly column →
Looking for “open source Calendly”?
Several projects have carried that label over the years, and more than one has since moved toward a closed-core or hosted-first model as it grew. Punctual's MIT license is not a marketing position that can quietly change later — the pledge above is the whole single-team product, and it stays that way by construction, not by promise.
The pledge
The open-source version is complete for a single team — forever. No seat limits, no gated scheduling features, no “non-production use” clauses. MIT makes this promise irrevocable: what we ship can never be taken back.