Postman

Postman has evolved from a simple API client into an AI-native platform that covers the full API lifecycle. The AI Engineer and Agent Mode with Playwright are not gimmicks—they genuinely reduce boilerplate for writing tests and generating SDKs. Performance Streaming and AsyncAPI 3.0 support show Postman is keeping pace with modern API paradigms. When to pick Postman: if you're in a team that needs shared workspaces, version-controlled specs, and governance rules. The Free tier is generous, and the Solo plan ($9/mo) is affordable for power users who want more AI credits. For enterprises, the $49/user/mo plan includes pooled AI credits, API Catalog, and audit logs. When to pass: if you're a solo developer who just needs curl or a lightweight alternative like HTTPie, Postman's overhead isn't worth it. Also, if you need fully offline operation, Postman requires internet for many features. Teams on a tight budget may find the per-user pricing adds up. Compared to Insomnia: Insomnia is free and open-source with a lighter interface, but lacks Postman's collaboration, governance, and AI features. For team workflows, Postman's edge is clear. Real-world caveats: AI credits on Free (50/mo) run out quickly if you use AI features heavily. Overages cost $0.05/credit, which can add up. The desktop app is resource-hungry—expect 500MB+ RAM usage. Some users report that the UI can feel cluttered with the many features. Bottom line: Postman is the Swiss Army knife of API tools. It's overkill for simple use cases, but for teams building and shipping APIs at scale, it's hard to beat.