The best Web Debugger alternative to Burp Suite is mitmproxy, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Burp Suite and six of them are Web Debuggers so hopefully you can find a suitable replacement. Other interesting Web Debugger alternatives to Burp Suite are Zed Attack Proxy (ZAP), Fiddler, HTTP Toolkit and Charles.
mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP. It provides a console interface that allows traffic flows to be inspected and edited on the fly. It also features mitmdump, a commandline tool that provides a tcpdump-like interface for saving, viewing and...
The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications.
Web Debugging Proxy that logs all HTTP(S) traffic for comprehensive analysis. It allows manipulation of traffic, supports scripting, and extends with .NET. Debugs virtually any application, implementing man-in-the-middle interception with self-signed certificates. Freeware, ideal for developers.
HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools and automatic interception for clients from Docker to Android to iOS.
Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).
Lonkero is a high-performance web vulnerability scanner built in Rust for penetration testers and bug bounty hunters who are tired of slow, bloated tools that generate hundreds of false positives.
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