CloakBrowser
Stealth Chromium with source-level fingerprint patches — drop-in Playwright/Puppeteer replacement.
CloakBrowser's source-level patching makes it the most convincing stealth solution for Playwright/Puppeteer developers. It's production-ready, actively maintained (Chromium 148), and integrates seamlessly with existing codebases. A must-try for serious automation engineers.
- Web scraping teams needing reliable stealth browsing
- QA engineers running automated tests on anti-bot sites
- AI agent developers building browser-use tools
- Security researchers testing bot detection systems
- Users seeking a general-purpose consumer browser
- Teams needing built-in proxy rotation or CAPTCHA solving
- Beginners without existing Playwright/Puppeteer experience
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In short
CloakBrowser — Stealth Chromium with source-level fingerprint patches — drop-in Playwright/Puppeteer replacement. Best for Web scraping teams needing reliable stealth browsing, QA engineers running automated tests on anti-bot sites, AI agent developers building browser-use tools. Free to start; paid plans from $1929/mo.
Viability Score
How likely is CloakBrowser to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- Source-level C++ patches (59 patches) for fingerprint modification
- Drop-in replacement for Playwright/Puppeteer/Selenium
- Passes 30+ bot detection tests including reCAPTCHA v3, Cloudflare Turnstile, FingerprintJS, BrowserScan
- Human-like interaction: Bézier mouse, natural keyboard timing, realistic scroll
- GeoIP auto-configuration of timezone, locale, and language
- Persistent browser profiles for session reuse
- Binary management CLI for easy updates
- Docker image for containerized deployments
- Stealth driver removes CDP automation leaks
- Tested with AI browser agents like browser-use, Crawl4AI, agent-browser, Claude computer use
- Cross-platform: Linux, Windows, macOS (x64 and ARM64)
- Proxy support via Playwright API
- No CAPTCHA-solving or proxy rotation built-in
- Free and open source under license
- Updated patches for Turnstile and reCAPTCHA v3 (Chromium 148)
About CloakBrowser
CloakBrowser is a real Chromium binary modified at the C++ source level to defeat bot detection systems. Unlike config-based or JavaScript-injection stealth tools, CloakBrowser patches 59 fingerprint vectors (Canvas, WebGL, audio, fonts, GPU) directly into the browser binary. It passes all 30+ detection tests on live sites like reCAPTCHA v3, Cloudflare Turnstile, FingerprintJS, and BrowserScan, scoring as a normal human browser. The latest release (Chromium 148) includes updated patches for Turnstile and reCAPTCHA v3 compatibility. Developers use CloakBrowser as a drop-in replacement for Playwright, Puppeteer, or Selenium — the same API, same code, just a different import. It adds human-like interaction with a single flag (`humanize=True`) that introduces Bézier mouse movements, natural keyboard timing, and realistic scroll physics. It supports Python, JavaScript, and Docker, and automatically adjusts timezone, locale, and language based on proxy IP. CloakBrowser is designed for teams running web automation at scale — scraping, testing, AI browser agents (e.g., browser-use, Crawl4AI, Claude computer use). It does not solve CAPTCHAs or rotate proxies; it prevents unnecessary challenges by appearing as a normal browser. The tool is production-ready with Docker images, persistent profiles, and a binary management CLI. Compared to config-based stealth tools like Puppeteer-Extra or Playwright-Stealth, CloakBrowser's source-level approach provides more consistent, harder-to-detect fingerprint spoofing. However, it lacks built-in proxy rotation, CAPTCHA solving, and a consumer-friendly interface.
Behind the Verdict
CloakBrowser directly addresses the root cause of bot detection: detectable browser fingerprints. By patching Chromium at the C++ level, it avoids the fragility of JavaScript injection or launch flags. We'd reach for this when a site consistently blocks standard Playwright/Puppeteer setups despite stealth plugins. The `humanize=True` flag is a standout — it adds realistic interaction without extra code, which saves hours of manual script tuning. Where it bites: CloakBrowser isn't a full automation platform. There's no proxy rotation or CAPTCHA solving built in — you bring those yourself via Playwright API or external services. Also, headless mode is still detectable by some sites; for maximum stealth, you need a virtual display. The pricing is competitive for teams but may feel steep for solo devs on the Solo plan. Compared to Puppeteer-Extra StealthPlugin, CloakBrowser is more robust because patches survive browser updates and changes in detection heuristics. However, if your targets are easy sites that don't use advanced anti-bot measures, the free tier of CloakBrowser (or even stock Playwright) may be overkill. We'd pass on this if you're just scraping a few simple endpoints or need a GUI consumer browser. In practice, teams running AI browser agents like browser-use find CloakBrowser invaluable for reducing manual intervention. The Docker image makes it simple to deploy at scale. One caveat: the binary is ~200MB and auto-downloads on first launch, so cold starts in containerized envs can be slow. Still, for consistent stealth, CloakBrowser is the most reliable option we've tested.
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Use Cases
- Scrape e-commerce sites that use Cloudflare Turnstile to block bots
- Automate login flows on platforms protected by reCAPTCHA v3
- Run headless browser tests on anti-bot verification services
- Feed stealth browser data into AI agents for web research
- Avoid fingerprinting when using puppeteer-extra or playwright default stealth
Limitations
- CloakBrowser does not include proxy rotation or CAPTCHA-solving services — you must supply your own proxies and solve challenges separately.
- The stealth patches target Chromium 148 as of July 2026; updates may lag behind the latest Chrome release by a few days.
- There are no built-in rate limiting or session management tools beyond Playwright's.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
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