Skivvy - Keyboard Window Resizer for macOS

⌨️ Nine Shortcuts, Six Columns The screen is divided into six equal columns. ⌘ with an arrow key gives halves, ⌥⌘ gives thirds, and ⇧⌘ gives two-thirds. Left arrow anchors left, right arrow anchors right, up arrow fills or centers. Every layout is full height and flush against the screen edges. Press the same shortcut again and the window moves to the same layout on the next display. 🔒 Small Enough to Trust Window utilities need the macOS Accessibility permission, which lets an app read and control every other app on the machine. Skivvy is the smallest thing that does the job: the shortcuts use Carbon hotkeys that need no permission and never observe other keystrokes, and exactly two source files touch the Accessibility API to move and resize the focused window. No network, no analytics, no updater. Build it yourself in one command and the binary on your Mac came from your Mac. 🩲 Why Skivvy It replaces Divvy, an Intel-only window manager abandoned years ago that stops launching when macOS 28 removes Rosetta. The layouts and key combinations are hard coded, and they are easy to change in one source file if your muscle memory differs. 📦 What You Get The full Xcode project, unit tests, build and install scripts, and a README covering what it is, how to customize the shortcuts, how to build it, and how to install it. Requires Xcode 27 to build.