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HTTP Dog vs RescueGroups

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

APIHTTP DogNEW—RescueGroupsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
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

HTTP Dog vs RescueGroups: common questions

Which is more reliable, HTTP Dog or RescueGroups?

On our scheduled checks, RescueGroups leads on measured uptime — HTTP Dog at —% versus RescueGroups 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 HTTP Dog and RescueGroups need an API key?

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

Can I call HTTP Dog and RescueGroups from the browser?

Neither sends browser-friendly CORS headers reliably, so call HTTP Dog and RescueGroups from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are HTTP Dog and RescueGroups free for commercial use?

HTTP Dog has unclear commercial terms, and RescueGroups 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.