Progress Telerik Fiddler Classic

Progress Telerik Fiddler Classic 6.0.20262.10021

The Original and Free Web Debugging Proxy Tool Exclusively for Windows

  • By Progress Software Corporation
  • Proprietary
  • Updated Sep 30, 2026
Download for Windows

About Progress Telerik Fiddler Classic

Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet.
Fiddler allows you to inspect all HTTP(S) traffic, set breakpoints, and "fiddle" with incoming or outgoing data. Fiddler includes a powerful event-based scripting subsystem, and can be extended using any .NET language.
Fiddler is freeware and can debug traffic from virtually any application, including Internet Explorer, Mozilla Firefox, Opera, and thousands more.

What's new in 6.0.20262.10021

fixes:
Added mitigations for CVE-2026-77802, CVE-2026-77803, CVE-2026-77804, CVE-2026-77805

Full release notes »

Technical details

PublisherProgress Software Corporation
Version6.0.20262.10021
Release date2026-09-30
LicenseProprietary
Installer typenullsoft
Architecturex86
Package IDTelerik.Fiddler.Classic

Links & install command

Install Progress Telerik Fiddler Classic from the command line with Windows Package Manager (winget):

winget install --id=Telerik.Fiddler.Classic -e

capturedebugnetworkproxyrequestresponsetrafficweb

Older versions

  • 6.0.20261.7291
  • 5.0.20262.6151
  • 5.0.20261.4301
  • 5.0.20253.3311
  • 5.0.20252.3251
  • 5.0.20251.1171
  • 5.0.20245.10105
  • 5.0.20244.10953
  • 5.0.20243.10853