v0.1.1GPL-3.0Windows only

Download Helm, Quartz and Mantle.

Each is a free Windows installer, per-user, with no admin prompt. Or build any of them from source.

Check a download

In PowerShell, run (Get-FileHash ~\Downloads\Helm-Setup.exe).Hash -eq 'c1f0c7b17e859f1e982652cf959a4f83e156fcac0d2547d3b644e958ddb8536a'. It prints True when your Helm-Setup.exe is the published file.

True: your Helm-Setup.exe is the published v0.1.1 file, all 114,542,524 bytes of it.

The installers

  • Helm

    Your Claude Code sessions in a real window.

    Helm-Setup.exe · 109.2 MB · Windows 10/11 x64 · v0.1.1 · 30 Oct 2026

    Needs your own Claude Code install, signed in, and internet on first run. Setup steps

    Download Helm for Windows Source
    git clone …/helm

  • Quartz

    A browser where pages, terminals and apps are all tabs.

    Quartz-Setup.exe · 131.9 MB · Windows 11 x64 · v0.1.1 · 30 Oct 2026

    Claude tabs need Claude Code installed. Protected video (Netflix, Disney+, Prime Video and similar) won’t play in this build. Setup steps

    Download Quartz for Windows Source
    git clone …/quartz

  • Mantle

    A shell layer for Windows 11.

    Mantle-Setup.exe · 139.6 MB · Windows 11 · v0.1.1 · 30 Oct 2026

    Use it at your own risk. Mantle takes over parts of the Windows 11 shell (taskbar, Win key, Alt+Tab, notifications) and has been built and tested on one PC. Setup steps

    Download Mantle for Windows Source
    git clone …/mantle

All three have been built and tested on one machine. Built 1 Nov 2026 from each project’s latest GitHub release.

Requirements

What each one needs.

HelmQuartzMantle
Windows10 or 11, x6411, x6411 only
Also needsYour own Claude Code, signed in (or an Anthropic API key); internet on first runClaude Code, for Claude tabs; adb and scrcpy, for the phone tabNothing else for the installer
Admin promptNoNoNo

The first run

“Windows protected your PC”

The installers aren’t code-signed yet, so Windows SmartScreen shows “Windows protected your PC” the first time you run one. That’s expected.

  1. Click More info.
  2. Check the app name is the file you downloaded, for example Quartz-Setup.exe. The publisher shows as “Unknown publisher”.
  3. Click Run anyway.

Your browser may also warn that the file “isn’t commonly downloaded”. Choose Keep. Only run an installer you downloaded from the links on this site or from the project’s GitHub Releases page.

Updates and uninstalling

Each update installs over the old copy.

  • Helm

    Updates. Settings → Helm → Updates shows a new version.

    Uninstall. Settings → Apps → Helm. Your settings and sessions in %APPDATA%\Helm stay.

  • Quartz

    Updates. Quartz shows Download the installer when a new version is out.

    Uninstall. Settings → Apps → Installed apps → Quartz. To remove everything, also delete %APPDATA%\Quartz.

  • Mantle

    Updates. Mantle shows a banner with Download.

    Uninstall. Settings → Apps → Installed apps → Mantle. It puts Windows back and checks the taskbar first.

Build from source

Build what you run.

Every line is on GitHub, so you can build what you run. Each one runs from the folder you clone. Each repository’s README has the full build notes.

Helmgit, Node.js 22 or newer

git clone https://github.com/atlas-studio-software/helm
cd helm
npm install
npm start

Quartzgit, Node.js 22.12 or newer, below 27

git clone https://github.com/atlas-studio-software/quartz
cd quartz
npm ci
npm start

Mantlegit, Node.js 24, .NET Framework 4.x (ships with Windows)

git clone https://github.com/atlas-studio-software/mantle
cd mantle
npm install
npm run build:sidecar
npm test
npm run live

Mantle’s npm test opens three ordinary windows and changes nothing; npm run live is the real thing, with a 3-second warning. The copy button stops before npm run live, so going live is always your own step.

Older versions

Every release, with its notes.

Every release, with its notes, is on each project’s GitHub Releases page, and on our Releases page.