Icon of Fiddler Classic

Fiddler Classic is a powerful web debugging tool that logs all HTTP(s) traffic between a server and its client in order to provide a complete picture of how different responses work. It allows you to analyze and examine HTTP and HTTPS traffic from browsers and desktop applications. It allows you to see all communication at a glance, or to dig deeper and see more.

By monitoring all the HTTP requests and responses, you can quickly identify communication errors in your application’s infrastructure. It produces detailed coverage of an HTTP request, including its headers, body, cookies, and attachments. With Fiddler, you can analyze how web pages are performing and define security policies, as well as improve developer productivity.

Fiddler Web Debugger Main Interface Screenshot

Key Features:

  • Web Debugging
  • Performance Testing
  • HTTP(S) traffic Inspection & Analysis
  • Share captured traffic with collaborators
  • Works seamlessly with any browser, or application
  • Decrypt secure traffic (HTTPS)
  • Web Session Manipulation
  • Security Testing
  • Customizing Fiddler
  • Compose API requests

Download Fiddler Classic Edition

Download Free

Note: Fiddler 5 requires to download .NET Framework 4+.

Last Update: April 03, 2024

Current Version: 5.0.20242.10753

License: Freeware

Languages: Multiple Languages

Supported Operating Systems:
Windows XP / Vista / 7 / 8 / 8.1 / 10 (32-Bit, 64-Bit)

Developer: Telerik

Homepage: Telerik.com

Disclaimer: The direct download links we offer for this software are sourced from the official website of the author or developer, guaranteeing they are 100% original and unaltered. However, because the links are external, we cannot guarantee their safety, availability, or download speeds. We will research and find various download options for your software, including online installers, full offline installers (usually 'exe' or 'msi', 'dmg', and occasionally 'iso' or torrent), and portable editions (commonly 'zip' or 'rar'). We wish to clearly express our firm opposition to piracy. We maintain a strict zero-tolerance policy against piracy and will neither offer nor share any pirated or illegal versions or tools. We strongly advise against using such methods, as they can damage your devices. We highly encourage you, if you value this software, to invest in a legitimate license. Doing so not only guarantees your safety but also supports the developers, resulting in improved software quality.