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Open Library vs Noozra

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

APIOpen LibraryHEALTHY—NoozraNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseMixed — mostly openUnverified (aggregated RSS headlines)
Free tierUnlimited within courtesy limitsFree tier available (pricing tiers published at /api/pricing)
Rate limitSoft — identified UA appreciatedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Open Library vs Noozra: common questions

Which is more reliable, Open Library or Noozra?

On our scheduled checks, Noozra leads on measured uptime — Open Library at —% versus Noozra 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 Open Library and Noozra need an API key?

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

Can I call Open Library and Noozra from the browser?

Yes — both Open Library and Noozra 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 Open Library and Noozra free for commercial use?

Open Library has unclear commercial terms, and Noozra 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.