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Alan Perlis Quotes vs arcsecond.io

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

APIAlan Perlis QuotesNEW—arcsecond.ioNEW—
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 limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Alan Perlis Quotes vs arcsecond.io: common questions

Which is more reliable, Alan Perlis Quotes or arcsecond.io?

On our scheduled checks, arcsecond.io leads on measured uptime — Alan Perlis Quotes at —% versus arcsecond.io 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 Alan Perlis Quotes and arcsecond.io need an API key?

Neither needs a paid key — Alan Perlis Quotes is callable with no signup, and arcsecond.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Alan Perlis Quotes and arcsecond.io from the browser?

Yes — both Alan Perlis Quotes and arcsecond.io 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 Alan Perlis Quotes and arcsecond.io free for commercial use?

Alan Perlis Quotes has unclear commercial terms, and arcsecond.io 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.