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Crates.io vs eNanoMapper database

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

APICrates.ioHEALTHY90eNanoMapper databaseHEALTHY79
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%100%
P50 · ms4581601
P95 · ms13173310
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

Crates.io vs eNanoMapper database: common questions

Which is more reliable, Crates.io or eNanoMapper database?

Both are neck-and-neck — Crates.io and eNanoMapper database each measure 99.02% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Crates.io or eNanoMapper database?

Crates.io has the lower median latency in our checks — Crates.io responds in 458 ms versus eNanoMapper database at 1601 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Crates.io and eNanoMapper database need an API key?

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

Can I call Crates.io and eNanoMapper database from the browser?

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

Are Crates.io and eNanoMapper database free for commercial use?

Crates.io 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.