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RockxyFiddler Classic
Free

Free and open source under the AGPL.

 Free

Free for eligible non-commercial use; commercial use points to the paid Fiddler…

macOS Windows
  • Native Mac app for Apple Silicon and Intel
  • Breakpoints, map local and remote, and request replay
  • Captures and decrypts HTTPS traffic for inspection
  • Lets you modify requests and responses
  • macOS only, requires macOS 14 or newer
  • HTTPS inspection requires installing and trusting a certificate
  • Licensed only for eligible non-commercial use
  • Windows only
Downloadable app Downloadable app
Open source Closed source
License: AGPL-3.0 License: Proprietary
Not stated if an account is needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.