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DummyJSON vs NetworkCalc

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

APIDummyJSONHEALTHY98NetworkCalcHEALTHY91
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%98.3%
P50 · ms32448
P95 · ms11133976
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no keyFree public API, no key
Rate limit100 req/window · 99 remaining · resets 1783510243Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

DummyJSON vs NetworkCalc: common questions

Which is more reliable, DummyJSON or NetworkCalc?

Both are neck-and-neck — DummyJSON and NetworkCalc 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, DummyJSON or NetworkCalc?

DummyJSON has the lower median latency in our checks — DummyJSON responds in 32 ms versus NetworkCalc at 448 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 DummyJSON and NetworkCalc need an API key?

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

Can I call DummyJSON and NetworkCalc from the browser?

Yes — both DummyJSON and NetworkCalc send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are DummyJSON and NetworkCalc free for commercial use?

DummyJSON has unclear commercial terms, and NetworkCalc 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.