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OpenHolidays API vs Zoom

Same instrument, two spec sheets — measured, not claimed.

APIOpenHolidays APINEW—ZoomNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenHolidays API vs Zoom: common questions

Which is more reliable, OpenHolidays API or Zoom?

On our scheduled checks, Zoom leads on measured uptime — OpenHolidays API at —% versus Zoom at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do OpenHolidays API and Zoom need an API key?

OpenHolidays API needs no key, while Zoom requires a free API key. If you want to start calling without signup, reach for OpenHolidays API first.

Can I call OpenHolidays API and Zoom from the browser?

Only OpenHolidays API is browser-friendly — it returns CORS headers over HTTPS. Zoom needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are OpenHolidays API and Zoom free for commercial use?

OpenHolidays API has unclear commercial terms, and Zoom has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.