The gist

CloakBrowser is an open-source stealth browser designed to bypass bot detection. It's a custom-compiled Chromium binary with fingerprint modifications made directly at the C++ source code level. This approach allows web scraping and browser automation scripts to appear as genuine user traffic to services like Cloudflare Turnstile and FingerprintJS, preventing them from being blocked. It's built as a drop-in replacement for existing automation libraries.

What it does

Bypass bot detection systems like Cloudflare Turnstile, reCAPTCHA v3, and FingerprintJS.
Serve as a drop-in replacement for Playwright and Puppeteer, using the same API.
Modify dozens of browser fingerprint vectors at the C++ source level, not via JavaScript injection.
Emulate human-like mouse movements, keyboard typing, and scrolling patterns with a single flag.
Automatically manage timezone, locale, and WebRTC IP spoofing based on a proxy's exit IP.
Create and manage persistent browser profiles with unique fingerprints and sessions.

How it works

Users install CloakBrowser as a Python or Node.js package. On first launch, it automatically downloads a custom, pre-patched Chromium binary. Developers then import the library and use the standard Playwright or Puppeteer API to control the browser, which transparently launches the stealth binary instead of a stock one. The tool is free and open-source, with no subscriptions or usage limits.

Best for

This tool is ideal for developers and data engineers running web scraping or browser automation tasks that are being blocked by sophisticated anti-bot systems.

Watch out for

CloakBrowser is designed to prevent CAPTCHAs from appearing, but it does not solve them if they are triggered. The documentation notes that its Puppeteer wrapper is less effective against reCAPTCHA Enterprise due to limitations in Puppeteer's own protocol.