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TimeZones iCal Library vs Zoom

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

APITimeZones iCal LibraryNEW—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

TimeZones iCal Library vs Zoom: common questions

Which is more reliable, TimeZones iCal Library or Zoom?

On our scheduled checks, Zoom leads on measured uptime — TimeZones iCal Library 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 TimeZones iCal Library and Zoom need an API key?

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

Can I call TimeZones iCal Library and Zoom from the browser?

Only TimeZones iCal Library 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 TimeZones iCal Library and Zoom free for commercial use?

TimeZones iCal Library 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.