What is an anti-detect browser?

An anti-detect browser lets you present a consistent, controllable browser identity instead of the accidentally-unique one a stock browser leaks. It's used for lawful automation, QA, privacy, and multi-account workflows where every session should look like a distinct, plausible machine.

Most are closed, paid binaries that rewrite the fingerprint with injected JavaScript or CDP hooks — brittle, self-revealing, and asking you to trust code you can't read. The engine-level approach compiles the controls into Chromium itself, so pages see native behavior and the JavaScript identity agrees with the real network handshake.

Clearcote is the open-source take: 100% readable patches, reproducible builds, and a drop-in Playwright / Puppeteer API. The free build is fully functional; Pro funds the maintained build. Read the docs to start.