Best WebSocket Testing Products

WebSocket Proxy is a browser based extension for testing and debugging. Monitor, inspect, and modify WebSocket traffic in real-time.

Key Tests.ws features:

Real-time traffic monitoring Message editing

Open Source free

The all-in-one Screenshot API for developers: capture websites, generate PDFs, record videos, and automate it all with powerful, scalable infrastructure. No browser setup, no hassle. Just clean results, fast.

Key ScreenshotMAX features:

Annoyance Blocking Scheduled Screenshot Tasks Full-Page Screenshot Rendering HTML to PDF Conversion

Try for free freemium $19.0 / Monthly

Burp Suite is an integrated platform for performing security testing of web applications.

Key Burp Suite features:

Comprehensive Features User-Friendly Interface Customization and Extensibility Active Community

The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding...

Key Zed Attack Proxy features:

Open Source Active Community Ease of Use Comprehensive Toolset

Open Source

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.

Key mitmproxy features:

Open Source Interactive Interface Scripting Support Cross-Platform

Open Source

The Collaboration Platform for API Development.

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

A Powerful API Mocking and Testing Tool.

Key Requestly features:

Redirect URL Block Network Requests Modify Request & Response Header Modify Response

Open Source freemium

Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

Key Proxyman.io features:

User-Friendly Interface Cross-Platform Support Real-time Traffic Interception HTTPS Decryption

Open Source $49.0 / Annually