Developer Tools vs Postman

devtools.tr is a free toolbox of 173 web and developer tools for webmasters, developers and system administrators. Every check runs live against real servers: DNS lookup, SSL/TLS and security headers, website analyzer with PDF reports, SEO and Core Web Vitals, TTFB, CDN and compression tests, IP geolocation, WHOIS, ASN and blacklist checks. Developer utilities include a JSON formatter and validator, regex tester, Base64, UUID, SQL/HTML/CSS/JS formatters and minifiers. Results come as clear reports with scores and ready-to-paste fixes for Apache, nginx and Cloudflare. No sign-up, no limits, fully in English and Turkish, and works on mobile.

Postman is an API platform that the company says is used by more than 50 million developers and 500,000 companies. It began in 2012 as Abhinav Asthana's side project in Bangalore, became a company in 2014 and is now based in San Francisco. Its core job is sending and testing HTTP requests, but it has grown into a shared workspace for designing, documenting, mocking, monitoring and publishing APIs.

Work is organized into collections of requests with scripts and tests, environments for variables and workspaces for collaboration. Postman also offers mock servers, scheduled monitors, a collection runner and CLI for CI pipelines, Spec Hub for API definitions, native Git sync, the public API Network, and AI features including Agent Mode and an MCP server that gives coding agents API context. Free is for one user, Solo raises limits for individuals, Team adds collaboration for unlimited users, and Enterprise adds governance and pooled AI credits.

Postman suits teams that want one shared place for requests, tests and docs. Its weak spots are weight and lock-in: the desktop app is heavy, most features require a cloud account, and collections use Postman's own format. Insomnia and Bruno are lighter clients that keep files in Git, while ReadMe, Stoplight and Scalar are stronger when polished public documentation is the main goal.

In 2026 Postman restructured its plans: Free is now strictly single-user, so any team of two or more needs Team at $19 per user per month billed annually. If you plan to lean on Agent Mode, check AI credits, since overages are billed per credit.