userstack
FreemiumLiveLast verified 24 Sept 2026
Parses a User-Agent string into device type, browser, OS and crawler-detection details.
Example request
curl -s 'https://api.userstack.com/detect?access_key=$API_KEY&ua=Mozilla/5.0%20(iPad;%20CPU%20OS%209_3_2%20like%20Mac%20OS%20X)%20AppleWebKit/601.1.46'
Free tier, in plain English
Free plan gives a small monthly quota of lookups for non-commercial use only; paid plans start at $9.99/month for 50,000/month with commercial use.
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