Best for

Developers debugging APIs, mobile apps, or third-party clients that ignore proxy settings.

Why it deserves attention

HTTP Toolkit launches a client with its proxy preconfigured, so you can capture traffic from browsers, Node, Python, Android, and iOS without manual certificate work. It shows requests and responses, supports breakpoints, mocking, and rewriting, and can generate ready-to-run client code. The Hobbyist tier is free; Pro adds automated mocking, export, and team features for about $7 a month. It is AGPL-3.0 and cross-platform, though Electron-based, so it is heavier than a native proxy.

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Can replace

Charles Proxy
Postman

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