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REST Countries vs Umeå Open Data

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

APIREST CountriesHEALTHY—Umeå Open DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseMPL-2.0Varies by dataset (municipal open data; see portal)
Free tierUnlimitedFree — open data portal, no key
Rate limitNone published1000 req/window · 999 remaining · resets 2026-07-09 00:00:00+00:00
In directory since2026-05-022026-07-05
operationalpartialdownno data

REST Countries vs Umeå Open Data: common questions

Which is more reliable, REST Countries or Umeå Open Data?

On our scheduled checks, Umeå Open Data leads on measured uptime — REST Countries at —% versus Umeå Open Data 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 REST Countries and Umeå Open Data need an API key?

Neither needs a paid key — REST Countries is callable with no signup, and Umeå Open Data is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call REST Countries and Umeå Open Data from the browser?

Yes — both REST Countries and Umeå Open Data send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are REST Countries and Umeå Open Data free for commercial use?

REST Countries allows commercial use on its free tier, and Umeå Open Data 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.