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.

A fiddle is a bowed string musical instrument, most often a violin or a bass. [1] Fiddle is a colloquial term for the violin, used by players in all genres, including classical music. Although in many cases violin …

May 14, 2025 · Fiddler is a free web proxy which supports HTTP and HTTPS traffic while providing a platform for debugging with an array of advanced features and data display. With the application, you …

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 visibility into …

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

Use Fiddler Everywhere to capture, inspect, debug, mock and export HTTP (s) network traffic on macOS, Linux and Windows.

JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle.

Your Fiddler Everywhere app should open automatically. If that doesn't work, click here. Don’t have Fiddler Everywhere?

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, and anyone …