CloakBrowser is a commercial stealth browser automation library that wraps Playwright (Python, JavaScript, .NET) with a custom patched Chromium binary. Its core purpose is to evade bot detection by spoofing browser fingerprints, providing human-like interaction (Bezier mouse moves, realistic typing with typos, smooth scrolling), and managing licensed binary downloads with cryptographic verification. The architecture is a multi-language SDK sharing identical logic across Python, TypeScript, and C#, with a common human interaction engine, proxy/GeoIP integration, and license enforcement via denial files and server validation. Key entry points are the `launch()` and `humanize()` APIs, CLI diagnostics (`info`, `login`, `install`), and the `cloakserve` CDP multiplexer. External dependencies include Playwright/Puppeteer, MaxMind GeoLite2 database, Ed25519 signature verification (BouncyCastle), and a license validation server. The codebase demonstrates high engineering discipline with extensive cross-language parity tests and security-conscious binary distribution, but carries drift risks from triple-language duplication and reliance on Playwright internal APIs.
Botright is a Python library built on Playwright that provides advanced browser automation with stealth features to evade bot detection. It includes proxy management, fingerprint spoofing using real browser profiles (chrome-fingerprints), human-like mouse movements, and CAPTCHA solving for hCaptcha, reCAPTCHA, and Geetest (though Geetest support is currently disabled). The library wraps Playwright's API with a custom layer that intercepts browser events, modifies user agent, platform, and other fingerprinting vectors, and injects anti-detection scripts. It supports both headless and headed modes, proxy rotation, and response caching. The codebase is well-structured but has commented-out modules indicating incomplete transitions (e.g., Geetest).