Fiddler Everywhere v6.2

Fiddler Everywhere is a web debugging proxy for desktop platforms. It captures HTTP/HTTPS, HTTP/2 and WebSocket traffic, then lets you inspect, search, filter and rewrite requests and responses in a live session.

Saved rules can modify headers, simulate slow connections or point a URL at a local mock, and the composer tab builds requests by hand for quick API checks. Mobile traffic from the same network can be captured through the LAN proxy mode.

What's inside

• Live capture of HTTP/HTTPS, HTTP/2 and WebSocket traffic
• Rule-based request and response modification
• Composer for hand-built REST and GraphQL requests
• Traffic filters, search and session export
• LAN proxy mode for mobile device debugging
• Session save and share for team review

How to install

1. Unpack the archive and run the installer
2. Launch the app and complete the first-run wizard
3. Install the root certificate when prompted to decrypt HTTPS
4. Sign in to sync rules and sessions across machines

System requirements

Windows 10/11 x64, 8 GB RAM, 2 GB free disk space, administrative rights for the proxy certificate