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Chromium with the fingerprint built in.

Give every account its own consistent device, and keep your Playwright and Puppeteer code. The values are set inside Chromium, so pages, workers and iframes all see the same machine.

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$ pip install clearcote
$ npm i clearcote

Same browser. Pick where it runs.

Run it yourself

On your machines

Install the SDK and keep your scripts. Your machines, your proxies.

Free for one browser · Personal $15/mo for 15 · Pro $49/mo for up to 250

The free key: GitHub, a card check or a company Google account.

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New
Let us run it

On our servers

One API call starts the same browser on our servers, behind a residential IP.

€1 per GB, proxy included · no plan

Start a hosted browser

Curious what your own browser gives away? Run the free fingerprint test.

13k+Engine downloadsGitHub Releases, all time245GitHub starsclearcote-browser
156Chromium basecurrent licensed build
7Chromium majorsthe Pro patches carried, 150 to 156
The engine

Either way, it's the same engine.

Most tools patch values from the outside. Clearcote sets them in Chromium's own C++, so there is no page script to find, and nothing for a worker or an iframe to contradict.

import clearcote

browser = clearcote.launch(fingerprint="acct-1", platform="windows")
page = browser.new_page()          # a normal Playwright page
page.goto("https://example.com")
  • 1

    Set in the engine

    Canvas, WebGL, audio, fonts and hardware values come from Chromium's own code paths. The main thread, workers and iframes agree.

  • 2

    One seed, one device

    The same seed gives the same device every session. A different seed gives an unrelated one. Use one per account.

  • A network that matches

    TLS and HTTP/2 follow the Chrome version you present. Timezone and language follow the proxy's exit IP.

See every signal it controls
Where the change happens

Every tool changes the browser somewhere. The deeper, the fewer seams.

A value set in the page can be read back as a script. A value set in the engine is just how the browser works.

  1. Layer 1

    The page's JavaScript

    Stealth plugins, e.g. puppeteer-extra-plugin-stealth

    Overrides are scripts a page can inspect, and workers or iframes may not get them.

    0 engine patches

  2. Layer 2

    The automation driver

    Patched drivers, e.g. undetected-chromedriver, nodriver

    Automation gets quieter, but the fingerprint is still the machine it runs on.

    0 engine patches

  3. Layer 3

    Chromium's C++, partly

    Other source-patched forksClosed anti-detect browsers

    The right layer. Other forks publish 35 to 87 patches; closed ones can't be read or rebuilt.

    35–87 patches

  4. Layer 3, all the way down

    Chromium's C++, end to end

    Clearcote Pro

    In the Pro build: 345 source files, from the renderer and V8 to TLS and the network stack. One seed, one device, everywhere a site looks.

    240 patches

Patch counts as published by each project, October 2026. Clearcote: the Pro build, r57 on Chromium 156; the free open build is a smaller, public set.

Works with

Whatever you already drive it with.

Python, Node, .NET

launch() returns a normal Playwright browser.

SDK docs

Playwright & Puppeteer

Or keep your own launcher and point it at the binary.

Drop-in guide

AI agents, over MCP

Claude Desktop, Cursor or Cline get one browser with a fixed identity.

MCP docs

No code at all

Profile Manager, a free desktop app for persistent identities on Windows, macOS and Linux.

About the app

Built for privacy, testing, research and lawful automation. Use is subject to local law and site terms — see our terms.

Pricing

Free to start. Pay when you scale.

5

Personal covers 5 browsers at once.

For yourself

For a team

Free

One browser at a time

$0never charged

  • The latest licensed build
  • GitHub, a card check or company Google
Get it free

Or build it from source, no account.

Personal

Up to 15 browsers at once

$15/month

  • Everything in Free
  • Up to 15 at once, on any number of machines
  • Pin a version, older builds, preview channel
Get Personal

Needs SDK 0.55.0 or newer. Help through the docs.

Pro

Up to 250 browsers at once

$49/month

  • Everything in Personal
  • Email support from the owner
  • Yearly, or a 30-day pass
Get Pro

Need more than 250? Add +100 for $25/month

Hosted

We run the browser for you · Residential proxy included

€1/ GB of traffic, billed in euros

Start a browser

Prefer no account at all? The open build is BSD-3 and reproducible from source. It runs Chromium 151 today and gets each new major about 11 weeks after Pro. Get it on GitHub · Compare plans

Don't trust us. Verify us.

Every release is checksummed and GPG-signed against a pinned key.

How to verify

CA96 F185 F96A 693A EDB3 AC1F CB00 D851 B7A8 6B0F

Questions

Questions, answered

What exactly is Clearcote?

A Chromium build with fingerprint control compiled into the engine, plus SDKs for Python, Node and .NET. Run it on your own machines, or use our hosted browsers: it is the same engine either way.

Is it really open source?

The open build is: BSD-3-Clause, every patch human-readable, reproducible from source. The latest build (the free key, Personal and Pro) adds work that is not published, so it cannot be rebuilt from public source.

Can I get the latest build for free?

Yes, for one browser at a time. Open Licenses in your dashboard and claim the free key with a GitHub account at least 30 days old. Without GitHub, a card check (never charged; prepaid cards are refused) or a company Google Workspace account also works. It is the same licensed build Pro gets, on a key that renews every 30 days. Needs SDK 0.30.0 or newer.

What does Pro ($49/month) add?

Up to 250 browsers at once on any number of machines, more in blocks of 100, plus older builds, version pinning, the preview channel and direct email support from the owner. Personal ($15/month) has the same build options for up to 15 browsers, without blocks or email support. Same build as the free key; nothing in Pro unlocks more fingerprint control.

Which platforms are supported?

Windows x64 and Linux x64. On an Apple Silicon Mac (macOS 13+) the licensed build runs natively as a preview, downloaded by the SDK (0.51.1+) when you launch with a licence key. On an Intel Mac, or without a key, launch() runs the Clearcote Docker image through Docker Desktop (SDK 0.40.0+).

What is it for, and is that allowed?

It is a browser, built for privacy, testing, research and lawful automation. Whether a specific use is permitted depends on your local law and the terms of the sites you visit, and that is your responsibility. We make no claims about any particular detection product.

More in the full FAQ.

Blend in. Stay clear.

Start with one browser, free. Keep your scripts. Move to Pro or Hosted when you need more.

Get a free keyTry hosted

pip install clearcote  ·  npm i clearcote  ·  dotnet add package Clearcote