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NeoWs - (Near Earth Object Web Service) vs Zen Quotes

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

APINeoWs - (Near Earth Object Web Service)NEW—Zen QuotesNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no key
Rate limitSee documentationRate-limited on the free tier (see zenquotes.io)
In directory since2026-07-052026-07-05
operationalpartialdownno data

NeoWs - (Near Earth Object Web Service) vs Zen Quotes: common questions

Which is more reliable, NeoWs - (Near Earth Object Web Service) or Zen Quotes?

On our scheduled checks, Zen Quotes leads on measured uptime — NeoWs - (Near Earth Object Web Service) at —% versus Zen Quotes 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 NeoWs - (Near Earth Object Web Service) and Zen Quotes need an API key?

Neither needs a paid key — NeoWs - (Near Earth Object Web Service) is callable with no signup, and Zen Quotes is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call NeoWs - (Near Earth Object Web Service) and Zen Quotes from the browser?

Neither sends browser-friendly CORS headers reliably, so call NeoWs - (Near Earth Object Web Service) and Zen Quotes from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are NeoWs - (Near Earth Object Web Service) and Zen Quotes free for commercial use?

NeoWs - (Near Earth Object Web Service) has unclear commercial terms, and Zen Quotes 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.