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Alan Perlis Quotes vs USGS Earthquake Hazards Program

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

APIAlan Perlis QuotesHEALTHY94USGS Earthquake Hazards ProgramHEALTHY91
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%100%
P50 · ms380549
P95 · ms12881638
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. Government work)
Free tierFree — limits not publishedFree — no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Alan Perlis Quotes vs USGS Earthquake Hazards Program: common questions

Which is more reliable, Alan Perlis Quotes or USGS Earthquake Hazards Program?

On our scheduled checks, Alan Perlis Quotes leads on measured uptime — Alan Perlis Quotes at 100% versus USGS Earthquake Hazards Program at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Alan Perlis Quotes or USGS Earthquake Hazards Program?

Alan Perlis Quotes has the lower median latency in our checks — Alan Perlis Quotes responds in 380 ms versus USGS Earthquake Hazards Program at 549 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Alan Perlis Quotes and USGS Earthquake Hazards Program need an API key?

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

Can I call Alan Perlis Quotes and USGS Earthquake Hazards Program from the browser?

Yes — both Alan Perlis Quotes and USGS Earthquake Hazards Program 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 USGS Earthquake Hazards Program free for commercial use?

Alan Perlis Quotes has unclear commercial terms, and USGS Earthquake Hazards Program allows commercial use on its free tier. 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.