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Adoptium vs UUID Generator

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

APIAdoptiumNEW—UUID GeneratorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublished60 req/window · 59 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

Adoptium vs UUID Generator: common questions

Which is more reliable, Adoptium or UUID Generator?

On our scheduled checks, UUID Generator leads on measured uptime — Adoptium at —% versus UUID Generator 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 Adoptium and UUID Generator need an API key?

Neither needs a paid key — Adoptium is callable with no signup, and UUID Generator is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Adoptium and UUID Generator from the browser?

Yes — both Adoptium and UUID Generator 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 Adoptium and UUID Generator free for commercial use?

Adoptium has unclear commercial terms, and UUID Generator 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.