Piper HTTPS Proxy icon
Piper HTTPS Proxy icon

Piper HTTPS Proxy

Free, open-source Fiddler Classic alternative for Windows. Capture, inspect, filter, replay, compose and mock HTTP/HTTPS traffic with TLS decryption, HTTP/2, HTTP/3 and SAZ support.

Piper HTTPS Proxy screenshot 1

Cost / License

Application type

Platforms

  • Windows
Piper HTTPS Proxy screenshot 1
Piper HTTPS Proxy screenshot 2
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Features

Properties

  1.  Lightweight
  2.  Privacy focused

Features

  1.  No registration required
  2.  No Tracking
  3.  Ad-free
  4.  Dark Mode
  5.  HTTP Proxy
  6.  Web page Debugging

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Piper HTTPS Proxy information

  • Developed by

    Unknown

  • Licensing

    Open Source (GPL-3.0) and Free product.

  • Written in

  • Alternatives

    6 alternatives listed

  • Supported Languages

    • English

AlternativeTo Categories

Development, Network & Admin

GitHub repository

  •  3 Stars
  •  1 Forks
  •  1 Open Issues
  •   Updated  
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Piper HTTPS Proxy was added to AlternativeTo by Tom-Wolf on and this page was last updated .
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What is Piper HTTPS Proxy?

Piper is a free, open-source HTTP(S) debugging proxy for Windows and a modern alternative to Fiddler Classic. It lets developers capture, inspect, filter, replay, compose, and mock HTTP/HTTPS traffic, including TLS decryption, HTTP/1.1, HTTP/2, and upstream HTTP/3.

Migrating from Fiddler Classic? Piper can import and export Fiddler SAZ archives, and its AutoResponder supports Fiddler-compatible rule syntax.

Why Piper instead of Fiddler Classic? Piper is a free, open-source Windows HTTPS debugging proxy with no paid edition, license key, or feature tiers. It is designed for developers who want a modern Fiddler Classic alternative while keeping familiar workflows and file formats.