Is this a free Postman alternative?

Yes — the API Tester lets you build and send HTTP requests (GET, POST, PUT, DELETE, etc.) with custom headers and body. It displays response data, headers, status code, and timing. No account required.

Can I test WebSocket connections?

Yes — the WebSocket Tester connects to any WebSocket server, lets you send messages, and displays incoming messages in real-time. Supports ws:// and wss:// protocols.

How do I convert a cURL command to code?

Paste your cURL command into the cURL to Code converter. It generates equivalent code in Python, JavaScript (fetch), Go, PHP, Ruby, and more.

API Tools — Test, Debug & Document APIs

Test APIs, debug WebSocket connections, decode JWTs, convert cURL commands, and explore OpenAPI specs — all from your browser. No installs, no signups.

API