[panzerboiler]

You can find it under System Preferences > Keyboard > Shortcuts, in the Keyboard section. The shortcut name is "Move focus to next window". It will automatically cycle the windows in reverse order adding shift to the shortcut.

[dylan604]

Is this not something that is enabled by default on all macOS installs? Cmd + ` has been something I've used for ever. No 3rd party app required.

[jacobmischka]

They are looking for the exact opposite, a shortcut that will only switch between different apps. Cmd+` only switches between windows of the same app, and I believe cmd+tab switches between windows of any app.

[dylan604]

No, Cmd+Tab switches between apps not windows within all apps.