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httpSMS vs Zube

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

APIhttpSMSDEAD0ZubeDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

httpSMS vs Zube: common questions

Which is more reliable, httpSMS or Zube?

Both are neck-and-neck — httpSMS and Zube each measure 0.0% 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.

Do httpSMS and Zube need an API key?

Both ask you to authenticate — httpSMS uses an API key and Zube uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call httpSMS and Zube from the browser?

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

Are httpSMS and Zube free for commercial use?

httpSMS has unclear commercial terms, and Zube 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.