https://www.telerik.com/download/fiddler

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.

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

• Request and Response Mocking (Auto Responder)

• Collaborate With Your Team

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.

Installation was successful!

To start Telerik Fiddler

• Use the Fiddler icon in your START | Programs menu.
• Or type fiddler in Start | Run

Important configuration steps

• Configure Fiddler for Windows 8
• Configure Fiddler to decrypt HTTPS traffic
• Monitor traffic to localhost from IE or .NET

Telerik FiddlerCore: Make Fiddler Your Own

Telerik FiddlerCore Embedded Engine is the core proxy engine used by Fiddler to intercept and modify web traffic. You can integrate FiddlerCore into your .NET applications to provide unprecedented functionality—programatically access the HTTP, HTTPS, WebSockets traffic coming in and out of your app / web service/ browser / mobile device. Modify and filter that traffic. Collect traffic stats. Export and import traffic and traffic data to files.