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Fiddler Classic vs ProxyPin: catalog facts
Fiddler Classic	ProxyPin
Free Free for eligible non-commercial use; commercial use points to the paid Fiddler…	Free Free and open source under the Apache 2.0 licence.
Windows	Windows, macOS, Linux, Android, iOS
Captures and decrypts HTTPS traffic for inspection Lets you modify requests and responses	Captures HTTPS as well as plain HTTP traffic Runs on desktop and mobile platforms from one codebase
Licensed only for eligible non-commercial use Windows only	HTTPS capture requires trusting the tool's certificate on each device Documentation is partly written for a Chinese-speaking audience
Downloadable app	Downloadable app
Closed source	Open source
License: Proprietary	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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