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Cataas vs PlaceDog

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

APICataasNEW—PlaceDogNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
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

Cataas vs PlaceDog: common questions

Which is more reliable, Cataas or PlaceDog?

On our scheduled checks, PlaceDog leads on measured uptime — Cataas at —% versus PlaceDog 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 Cataas and PlaceDog need an API key?

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

Can I call Cataas and PlaceDog from the browser?

Only Cataas is browser-friendly — it returns CORS headers over HTTPS. PlaceDog needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Cataas and PlaceDog free for commercial use?

Cataas has unclear commercial terms, and PlaceDog 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.