Blog
Deep dives on APIs.
- API Pagination: What 51 Public APIs Actually DoWe called 76 keyless public APIs to see how they paginate. Two thirds return no pagination metadata at all. Here are the measured results and how to loop each style.
- Best Swagger Alternatives in 2026, RankedThe best Swagger UI alternatives in 2026, ranked, with every free tier and licence checked today, plus what 385 real API doc pages say about rot.
- API Documentation Examples: 6 Worth CopyingSix real API documentation examples worth copying, picked from the 430 public APIs whose docs we index and link-check, plus what rot data says about them.
- Best Postman Alternatives in 2026, RankedThe best Postman alternatives in 2026, ranked, with every free-tier ceiling and licence verified today, plus 231 keyless public APIs to test them on.
- Best API Monitoring Tools in 2026, RankedThe best API monitoring tools in 2026, ranked, with free tiers verified today, plus what our weekly uptime sweep of 1,569 public APIs says actually breaks.
- Best API Testing Tools in 2026: 10 RankedThe best API testing tools in 2026, ranked, with each one's real free-tier ceiling checked on the publish date and the CORS trap that breaks browser-based clients.
- API Rate Limiting: Handle 429s, Then Set Your OwnHow API rate limiting works from both sides: reading limit headers, backing off correctly from a 429 against real public APIs, and setting limits on your own.
- REST API Best Practices: What 1,613 APIs DoThe REST API best practices that matter, each one measured against the 1,613 public APIs in our directory, so you can see which are followed and which are ignored.
- Free API Hosting: 7 Options and Their Real LimitsWhere to deploy an API for free, with each provider's actual free-tier ceiling on requests, CPU and idle time, checked against their own pricing pages.
- API Authentication Methods: What 1,625 APIs UseThe four API authentication methods that matter, compared, plus live data on what 1,625 public APIs actually use in production today.