Open Notify vs Open Science Framework

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

Uptime · 30d
Uptime · 90d71.6%97.1%
Uptime · 30d65.0%95.0%
P50 · ms241952
P95 · ms42982111
Authnonenone
CORSyesno
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licensen/aUnverified
Free tierUnlimited (volunteer-run)Free — limits not published
Rate limitPlease be gentleUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Open Notify vs Open Science Framework: common questions

Which is more reliable, Open Notify or Open Science Framework?

On our scheduled checks, Open Science Framework leads on measured uptime — Open Notify at 71.6% versus Open Science Framework at 97.1% 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 Notify or Open Science Framework?

Open Notify has the lower median latency in our checks — Open Notify responds in 241 ms versus Open Science Framework at 952 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 Notify and Open Science Framework need an API key?

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

Can I call Open Notify and Open Science Framework from the browser?

Neither sends browser-friendly CORS headers reliably, so call Open Notify and Open Science Framework from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Open Notify and Open Science Framework free for commercial use?

Open Notify has unclear commercial terms, and Open Science Framework 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.