Hi. I made this for the thing where you unplug your monitor and every window ends up on the laptop, and plugging back in doesn’t put them back.

Resettle is a menu bar app that learns where your windows go on each display setup (laptop only, home, office, clamshell) and puts them back when that setup comes back. Nothing to save. Tells identical monitors apart by serial, and every restore can be undone.

Upfront: it’s paid, $14.99 once, no subscription, not open source. Native Swift, macOS 14 through 27.

If you’d rather try the free options first, I wrote up what macOS can do on its own: https://getresettle.com/mac-windows-move-when-monitor-unplugged

Happy to hear where it breaks, especially with DisplayLink docks or KVMs.