NetworkCalc vs npm Registry
Same instrument, two spec sheets — measured, not claimed.
NetworkCalc vs npm Registry: common questions
Which is more reliable, NetworkCalc or npm Registry?
On our scheduled checks, npm Registry leads on measured uptime — NetworkCalc at —% versus npm Registry 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 NetworkCalc and npm Registry need an API key?
Neither needs a paid key — NetworkCalc is callable with no signup, and npm Registry is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call NetworkCalc and npm Registry from the browser?
Yes — both NetworkCalc and npm Registry 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 NetworkCalc and npm Registry free for commercial use?
NetworkCalc has unclear commercial terms, and npm Registry 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.