Fiddler

Fiddler screenshots

Fiddler is a web debugging proxy that displays Internet traffic from your PC
Main window
Fiddler 4.6 : Main window

Alternative downloads

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Web debugging proxy application for Windows users.
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Check SOCKS4, SOCKS5, HTTP, and HTTPS proxies with or without authentication.
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WCAT Extension for Fiddler
WCAT is the best tool to hammer your web server with requests.
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