ShiftIt
ShiftIt is a free, open-source window management utility for macOS that lets you snap, resize and reposition windows using keyboard shortcuts. Users can send the active window to the left or right half of the screen, maximize it, move it to another display, or tile multiple windows — all without touching the mouse. It sits in the menu bar and intercepts customizable hotkeys, making it popular with power users, developers, and anyone coming from tiling window managers on Linux or Windows who wants similar functionality on macOS.
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1 suggestionShiftIt has not received meaningful updates since the mid-2010s and there is no native Apple Silicon build. The Intel-only version still runs under Rosetta 2 today, but Apple is removing Rosetta in macOS 28 (September 2028) — just over two years away — so this app will stop launching entirely on that release. Rather than wait, consider switching to Rectangle, an actively maintained open-source successor that mirrors ShiftIt's keyboard-driven window-snapping workflow but runs natively on Apple Silicon. Rectangle is free, has a paid Pro version with additional layouts, and can import ShiftIt-style shortcuts during setup, making the transition straightforward. If you prefer a polished commercial alternative, Magnet on the Mac App Store is another popular paid option with native support.
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