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The current desktop release is a Windows x64 beta for Windows 10 or later. The Linux downloads are headless self-hosted runners; there is no signed macOS desktop build in the current beta.
1

Download the desktop build

Open sndbox downloads, choose Windows, and download the artifact listed in the published release manifest.
2

Verify the file

Compare the file’s SHA-256 digest with the value on the download page or in the release files.
PowerShell
3

Install the beta

Run the installer. A beta marked Unsigned test build can trigger a Windows SmartScreen unknown-publisher warning. Continue only when the source and checksum match the published release.
4

Confirm the runner

Open sndbox. The runner control at the bottom of the sidebar should show Ready. The managed Chromium runtime used by browser nodes is bundled with the desktop build.
Do not install a beta copied from an unverified mirror. A checksum proves file identity, not its source; verify both.

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Updates

Open Settings → Beta & updates to check for a release and choose Stable or Beta. Stable ignores prerelease builds. Beta includes beta and release-candidate builds. The installed version is shown on the same page.

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Build from the repository

For development, install Node.js and Rust with the Tauri prerequisites, then run:
Development desktop
browser:prepare installs the repository’s pinned browser sidecar and runtime. Production installers should come from the release pipeline rather than a local development build.