Fiddler Everywhere: The Web Debugging Proxy Tool Loved by Users Just Got Better

Capture all HTTP(S) traffic between your computer and the Internet with Fiddler HTTP(S) proxy. Inspect traffic, set breakpoints, and fiddle with requests & responses.

Looking for Fiddler Classic? Download it here

What is Fiddler Everywhere?

Fiddler Everywhere is a web debugging proxy for macOS, Windows, and Linux. Capture, inspect, monitor all HTTP(S) traffic between your computer and the Internet, mock requests, and diagnose network issues. Fiddler Everywhere can be used for any browser, application, process.


What Has Improved?

  • Refreshed UI

    Fiddler Everywhere takes Fiddler to a whole new level. We've completely revamped the entire user experience to make your tasks simple and intuitive.

  • Improved Composer

    The revamped API Composer makes it easy to quickly compose, test, group, and organize your API requests.

  • Request and Response Mocking (Auto Responder)

    The Auto Responder has been updated to allow you to effortlessly create mock requests and organize your auto-responding rules into groups.

  • Collaborate With Your Team

    Collaboration is easy in Fiddler Everywhere — no more manually exporting sessions or sending the captured traffic through email. Fiddler Everywhere lets you save captured traffic, add comments and share it with your colleagues — all without switching context.


Hundreds of thousands of organizations are using Fiddler

Join these companies and the 4 million developers who are already building,
running, and debugging with Fiddler.

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Nasa, Visa, Microsoft Fox, Samsung, IBM Continental Airlines, Volvo

Where and How to Use Fiddler Everywhere

Web Debugging

Debug traffic from macOS, Windows, or Linux systems and iOS or Android mobile devices. Ensure the proper cookies, headers, and cache directives are transferred between the client and server. Supports any framework, including .NET, Java, Ruby, etc.

Request & Response Mocking

Mock or modify requests and responses on any website. It’s a quick and easy way to change the request and responses to test websites without changing code.

HTTP/S Traffic Recording

Use Fiddler Everywhere to log all HTTP/S traffic between your computer and the Internet. Debug traffic from virtually any application that supports a proxy—Chrome, Safari, Firefox, Opera, Edge, and more.

Team Collaboration

Collaborate with your team by sharing captured traffic with the click of a button. Add more context by marking/highlighting the sessions, adding comments, and sharing the captured sessions over the cloud to collaborate with your teammates.

Additional Fiddler Tools

There’s a Fiddler for Just About Every Need

Fiddler Classic

Original Fiddler Web Debugger tool — feature rich, functional and supported only on Windows


The power of Fiddler in your app. A .NET library that allows you to capture and modify HTTP and HTTPS traffic.

Fiddler Cap

A lightweight companion tool to capture web traffic from end-users or from customer environments.

There’s a Reason Why We’re the
No. 1 Choice for so Many Developers

7.9/10 Ease of Use
7.9/10 Quality of Support
8.6/10 Ease of Setup

G2.com User Reviews


Fiddler is used by tens of thousands of users daily and they love it!

Don’t just take our word for it. G2 Users have consistently rated Fiddler 4.4 out of 5 stars. G2 is a renowned peer-to-peer review site that aggregates user reviews for business software.
Users of G2.com provide unbiased user reviews after they objectively access business software.

Read More Reviews on G2.com

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Kendo Waves

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