Fiddler
Windows, macOS, Linux · Internet

Fiddler

Optimize your web debugging with Fiddler's powerful tools.

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When web applications misbehave, pinpointing the issue can be a daunting task for developers. Fiddler offers a robust solution by allowing developers to inspect and debug HTTP(S) traffic between their computer and the internet. This is particularly useful when you're troubleshooting API calls or monitoring web performance during development.

Imagine you’re a web developer trying to figure out why a particular API request returns an error. With Fiddler, you can capture the exact request and response details, analyze headers, and even modify requests on the fly to test different scenarios. Whether you're working on Windows, macOS, or Linux, Fiddler provides a cross-platform toolset that simplifies the debugging process.

Features

  • Inspect HTTP(S) traffic
  • Modify requests and responses
  • Support for WebSocket traffic
  • Performance testing tools
  • Cross-platform compatibility
  • Session replay functionality
Platform
Windows, macOS, Linux
Developer
Telerik
License
Freeware
Rating
★ 4.5

Frequently asked questions

Is Fiddler free to use?

Yes, Fiddler is available as a free tool with optional paid features.

Can I use Fiddler to debug mobile applications?

Yes, Fiddler can capture traffic from mobile devices by configuring the device to use the computer's proxy.

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