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DownStatus vs ItsThisForThat

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

APIDownStatusNEW—ItsThisForThatNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API key (per docs)Free — limits not published
Rate limitUnpublishedUnpublished (docs ask you not to hammer it)
In directory since2026-07-052026-07-05
operationalpartialdownno data

DownStatus vs ItsThisForThat: common questions

Which is more reliable, DownStatus or ItsThisForThat?

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

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

Can I call DownStatus and ItsThisForThat from the browser?

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

Are DownStatus and ItsThisForThat free for commercial use?

DownStatus has unclear commercial terms, and ItsThisForThat 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.