What is loop?

Loop is a free macOS app that helps you move and resize windows on your screen without dragging corners or pulling menus. It works on macOS 13 and later and can be installed via Homebrew or by downloading a zip file from the releases page. The main way to use it is through a radial menu, which appears when you hold down a trigger key you choose. While holding that key, you move your mouse in the direction you want the window to go, such as left half, right half, top quarter, or full screen, and the window snaps there. Before the resize actually happens, an optional preview shows you exactly where the window will land, so you can confirm before committing. You can also skip the mouse entirely and assign keyboard shortcuts to trigger any window action directly. A feature called Cycles lets you press the same key combination multiple times to rotate through a series of window positions in sequence. For example, pressing your resize shortcut once might put a window at the left third of the screen, pressing it again moves it to the left two-thirds, and a third press returns it to its original size. This makes it practical to cycle through layouts without planning them in advance. There is also a Stash feature that lets you push windows to the edge of the screen to hide them temporarily. Hovering near that edge or pressing a key brings them back. The radial menu itself is fully customizable: you can change its size, shape, and colors, or turn it off entirely and rely on keyboard shortcuts only. Loop also supports a URL scheme, so you can trigger window actions from shell scripts or AppleScript. The README lists commands for moving windows to specific positions, switching them to another monitor, and chaining multiple actions in a script. The project is open source and under active development, with a community Discord channel for feedback and questions.