Fiddler is a web debugging proxy tool for Windows, macOS and Linux. It has evolved from Fiddler Classic into a more robust and versatile product - Fiddler Everywhere.

May 14, 2025 · Fiddler, free download for Windows. Tool that intercepts and analyzes HTTP and HTTPS traffic to help diagnose and debug web application issues.

Welcome to the GitHub repo for Fiddler Documentation. This repository contains the source content--written in Markdown--that we use to power the Fiddler Classic Documentation at …

Fiddler is a web debugging tool that allows you to monitor and modify HTTP and HTTPS traffic between your computer and the internet. It’s an invaluable tool for developers, QA engineers, …

Want to have Fiddler automatically rewrite requests and responses, add or remove headers, or flag/ignore sessions based on rules you specify? Check out the FiddlerScript Cookbook.

Download and install Fiddler Classic web debugging tool. Watch a quick tutorial to get started.

Fiddler Everywhere is a modern, easy-to-use web debugging proxy tool for Windows, macOS and Linux which captures, logs, monitors and inspects all HTTPS traffic, allowing you detailed …

Download Fiddler Everywhere, the professionally built and supported web debugging proxy tool for Windows, macOS, and Linux. Free and fully-functional trial.

Fiddler Everywhere is a modern, easy-to-use web debugging proxy for macOS, Windows, and Linux. It’s a high-performance cross-platform tool for any browser or system.

Nov 17, 2025 · Fiddler Everywhere captures and logs all HTTPS, WebSocket, Server-Sent Events, gRPC, and Socket.IO traffic between your computer and the Internet and enables you …