Fiddler Everywhere

Never Be Confined by Limitations When Debugging HTTP(S) Traffic.

Amplify your debugging efforts with a Web Debugging Proxy for any device or platform. Fiddler Everywhere is a pathway for all, supporting macOS, Linux and Windows. 


Looking for Fiddler Classic, the original Windows-only version? Download it here

What is Fiddler Everywhere?

Fiddler Everywhere is a secure and modern 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 in an approach that is straighforward yet yields measurable time and cost-savings.  

What's inside Fiddler Everywhere is supercharged inspecting, debugging and mocking features. Fiddler Everywhere can be used for any browser, application, or process and is engineered to deliver extraordinary results and alleviate unneeded burdens because your time is valuable.  

What's Supercharged in Fiddler Everywhere

Thoughtful User Interface
  • Thoughtful User Interface

    With an intuitive UI, you can focus on the debugging task at hand without being slowed down. You’ll appreciate the straightforward approach yet value the enhanced usability.

  • Nimble API Composer

    Fiddler Everywhere's API Composer makes it easy to quickly compose, test, group, and organize your API requests. You can make a new request from scratch or edit a request already captured by Fiddler Everywhere.

  • Robust Request and Response Mocking (Auto Responder)

    The Auto Responder feature in Fiddler Everywhere allows you to effortlessly create mock requests and organize your auto-responding rules into groups. Easily test changes to web code without updating the production server,

  • Amplified Team Collaboration

    Rely on user-friendly and secure collaboration within 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 a Fiddler product

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

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

Where and How to Use Fiddler Everywhere

Comprehensive Web Debugging

Avoid the risk of costly oversights.

  • Debug traffic from macOS, Windows, or Linux systems and iOS or Android mobile devices. Ensure cookies, headers and cache directives are transferred between the client and server.

Unsurpassed Request & Response Mocking

Deliver better outcomes.

  • Mock or modify requests and responses from any app. It is an uncomplicated way to change the request and responses to test any app without changing the code.

Secure HTTP/S Traffic Recording

Access network logs in seconds.

  • 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.

Remarkable Team Collaboration

Create a brilliant, efficient team.

  • Collaborate with your team by sharing captured traffic with the click of a button. Accurately add comments and safely share them with your colleagues. Designed to be secure.

Additional Tools and Solutions in the Fiddler Family

There’s a Fiddler Product for Every Need

Fiddler Classic

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


Reliable and powerful .NET library allowing 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.

Fiddler Jam

A unified troubleshooting Chrome extension solution for support teams to report and fix bugs.

4.4 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 provide unbiased user reviews after they objectively access business software.

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