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Radio Browser vs Sunor

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

APIRadio BrowserNEW—SunorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open source — no keyFree tier — API key required
Rate limitUnpublished (clients asked to send a descriptive User-Agent)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Radio Browser vs Sunor: common questions

Which is more reliable, Radio Browser or Sunor?

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

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

Can I call Radio Browser and Sunor from the browser?

Only Radio Browser 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 Radio Browser and Sunor free for commercial use?

Radio Browser has unclear commercial terms, and Sunor 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.