MiddleDrag
A single gesture you'll use a hundred times a day
Hold a modifier (or click the literal middle mouse button) and drag from anywhere inside any window to move it. A second modifier resizes. That’s the entire app — a Linux/X11 trick that macOS has never shipped, ported in a few hundred lines of Swift.
Most useful when a window’s title bar is hidden, off-screen, or buried under another window — the cases where macOS leaves you stranded. Open source, MIT-licensed, runs at zero CPU when idle. macOS 12+.