vdtree

vdtree is a lightweight command-line utility for Windows 10/11. It translates undocumented internal Windows COM IDs to map out your Virtual Desktops, listing every open window, its exact X/Y coordinates, size, and whether it’s pinned across multiple workspaces. You can view the output as a clean table or export it as JSON.

I originally started building this as part of a much larger, overly complex C# window session manager. After hitting a wall with fragile Windows internal APIs that break on every OS update, I decided to embrace the Unix Philosophy: “Do one thing, and do it well.” I rewrote the core read-only mapping logic into a single-file Python script and packaged it using PyInstaller.

It is delightful because it requires absolutely zero setup. You just download the standalone .exe and run it. It’s the perfect little tool for hunting down a window that got lost off-screen after unplugging a monitor, or for scripters who want to map their workspace topology!