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ddownload vs eNanoMapper database

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

APIddownloadREACHABLE—eNanoMapper databaseNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
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

ddownload vs eNanoMapper database: common questions

Which is more reliable, ddownload or eNanoMapper database?

On our scheduled checks, eNanoMapper database leads on measured uptime — ddownload at —% versus eNanoMapper database 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 ddownload and eNanoMapper database need an API key?

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

Can I call ddownload and eNanoMapper database from the browser?

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

Are ddownload and eNanoMapper database free for commercial use?

ddownload has unclear commercial terms, and eNanoMapper database 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.