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macOS
The only desktop build today. Intel Macs, Windows and Linux desktops are not packaged.
Command line
A self-contained server for macOS (Apple silicon) and Linux x64. No Node.js or npm needed. Then run j5 to start the server and open the web app, and j5 update to move to a newer release.
Intel Macs, Linux on ARM and Windows have no build yet; the install guide covers running from source there.
Every build is on the GitHub releases page.