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OWASP API Security Project vs REST Countries

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

APIOWASP API Security ProjectHEALTHY98REST CountriesHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms205328
P95 · ms16461189
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedMPL-2.0
Free tierFree — limits not publishedUnlimited
Rate limitUnpublishedNone published
In directory since2026-07-052026-05-02
operationalpartialdownno data

OWASP API Security Project vs REST Countries: common questions

Which is more reliable, OWASP API Security Project or REST Countries?

Both are neck-and-neck — OWASP API Security Project and REST Countries each measure 100% 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.

Which is faster, OWASP API Security Project or REST Countries?

OWASP API Security Project has the lower median latency in our checks — OWASP API Security Project responds in 205 ms versus REST Countries at 328 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 OWASP API Security Project and REST Countries need an API key?

Neither needs a paid key — OWASP API Security Project is callable with no signup, and REST Countries is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call OWASP API Security Project and REST Countries from the browser?

Only OWASP API Security Project is browser-friendly — it returns CORS headers over HTTPS. REST Countries needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are OWASP API Security Project and REST Countries free for commercial use?

OWASP API Security Project has unclear commercial terms, and REST Countries allows commercial use on its free tier. 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.