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Open Science Framework vs Satellite Passes

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

APIOpen Science FrameworkHEALTHY64Satellite PassesHEALTHY84
Uptime · 30d
Uptime · 90d97.1%99.02%
Uptime · 30d95.0%98.3%
P50 · ms952976
P95 · ms21113243
Authnonenone
CORSnoyes
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

Open Science Framework vs Satellite Passes: common questions

Which is more reliable, Open Science Framework or Satellite Passes?

On our scheduled checks, Satellite Passes leads on measured uptime — Open Science Framework at 97.1% versus Satellite Passes at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Open Science Framework or Satellite Passes?

Open Science Framework has the lower median latency in our checks — Open Science Framework responds in 952 ms versus Satellite Passes at 976 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 Open Science Framework and Satellite Passes need an API key?

Neither needs a paid key — Open Science Framework is callable with no signup, and Satellite Passes is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Open Science Framework and Satellite Passes from the browser?

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

Are Open Science Framework and Satellite Passes free for commercial use?

Open Science Framework has unclear commercial terms, and Satellite Passes 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.