Download Fiddler

Choose your download based on the version of the .NET Framework installed on your PC.
Users of Windows 8+ should choose Fiddler4.

Please select

Coming in the Next Version

Download beta
Built for .NET2, EXE, ~1MB

Need a Linux or Mac build?

Check Out the Alpha Build
For Mono framework

Getting Started with Fiddler

More Fiddler Tools

FiddlerCore

Traffic viewing and modification for .NET applications

FiddlerCap

Capturing web traffic logs

FiddlerCap with Firefox

Capturing web traffic logs with Firefox

FiddlerScript Editor

Edit script rules for Fiddler

System Requirements

  • Supported OS: Windows XP to Windows 10
  • Framework: Fiddler2 requires .NET v2, Fiddler4 requires .NET v4
  • Disk Space: 8MB
  • Processor: 1GHz
  • Memory: 2 GB+ recommended

Updating Fiddler

Upon start, Fiddler checks automatically for new versions. If you'd rather check for updates manually, set the option in Tools -> Fiddler Options

Check also

Release History
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The free web debugging proxy

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Automated functional, load,
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