I recently released https://robata.app https://robata.app. It provides a view of all your windows, allowing you to select the one you want. It's slightly differ

I recently released https://robata.app https://robata.app. It provides a view of all your windows, allowing you to select the one you want. It's slightly different from Alt-Tab, but you might find it useful. I've also added Alt-Tab-like shortcuts in the next version to be released.