REST Countries
★ 4/5 · Free API
REST Countries provides API access for developers to integrate AI or data capabilities into applications.
Pros
- Completely free tier requires no API key, authentication, or registration
- comprehensive country data including borders, currencies, languages
- optional paid tiers offer higher rate limits and premium data
Cons
- Free tier has rate limiting (exact limits vary)
- personal plan at $15/month is still restrictive at 25,000 requests/month for high-traffic applications
- no custom data or bespoke country information
Cost
Free (unlimited requests, no key required); Personal $15/month ($12/month annual); Professional $30/month ($24/month annual)
Verdict
Best for developers building low-traffic applications or prototypes needing country data without setup friction or payment friction.
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