1. Windows
2. Networking Software
3. Internet Operations
4. Fiddler Download

Manipulate and edit Web sessions, debug traffic from virtually any application that uses proxy.

Fiddler Screenshots

Fiddler Editor's review

Easily manipulate and edit web sessions.

All you need to do is set a breakpoint to pause the processing of the session and permit alteration of the request/response. You can also compose your own HTTP requests to run through Fiddler. Fiddler lets you see the "total page weight," HTTP caching and compression at a glance. Isolate performance bottlenecks with rules like "Flag any uncompressed responses larger than 25kb."

Fiddler is a free web debugging proxy which logs all HTTP(s) traffic between your computer and the Internet. Use it to debug traffic from virtually any application that supports a proxy like IE, Chrome, Safari, Firefox, Opera. Benefit from a rich extensibility model, ranging from simple FiddlerScript to powerful Extensions which can be developed using any .NET language.

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