OkSurf vs REST Countries
Same instrument, two spec sheets — measured, not claimed.
OkSurf vs REST Countries: common questions
Which is more reliable, OkSurf or REST Countries?
Both are neck-and-neck — OkSurf 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, OkSurf or REST Countries?
REST Countries has the lower median latency in our checks — OkSurf responds in 373 ms versus REST Countries at 274 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 OkSurf and REST Countries need an API key?
Neither needs a paid key — OkSurf 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 OkSurf and REST Countries from the browser?
Only REST Countries is browser-friendly — it returns CORS headers over HTTPS. OkSurf needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are OkSurf and REST Countries free for commercial use?
OkSurf 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.