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Sunor vs xColors

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

APISunorNEW—xColorsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Sunor vs xColors: common questions

Which is more reliable, Sunor or xColors?

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

xColors needs no key, while Sunor requires a free API key. If you want to start calling without signup, reach for xColors first.

Can I call Sunor and xColors from the browser?

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

Are Sunor and xColors free for commercial use?

Sunor has unclear commercial terms, and xColors 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.