Managing windows across multiple monitors on a Mac means fighting two things: the absence of a native move-between-displays command, and macOS relocating everything when a screen disconnects. <a href="https://sites.google.com/view/rectangle-app">Rectangle app</a> solves the first outright with keyboard commands that move and seat windows across screens, and it makes the second painless — recovering a scattered layout takes seconds rather than a long drag across bezels.