Grid Snap is an open source alternative to Divvy for macOS. Press a shortcut, a grid appears, drag across the cells you want, and the window snaps there. Save any region as a preset and it becomes a one-keystroke snap. The grid shows a live preview: the window follows your drag and jumps back if you cancel. Presets can have their own global shortcuts, and a Full screen preset on ⌃⌥F comes built in.
The app also offers an undo for the last snap, which you can redo by pressing the shortcut again. Grid size and the gap between windows are configurable, and you can snap the focused window or the one under the cursor. Grid Snap works across multiple displays and runs as a menu bar app that can launch at login, with no Dock icon. It makes no network requests, collects no analytics, and requires no account.
Grid Snap requires macOS 14 or later and is tested on macOS 26. It supports both Apple Silicon and Intel Macs. The easiest way to install it is with Homebrew using brew install --cask konieczkow/tap/gridsnap, or by downloading the zip from the latest release. On first launch, the app asks for Accessibility permission, which it needs to move other apps' windows. The grant takes effect without a relaunch.
The app is released under the MIT license. Known limitations include that full-screen windows ignore snapping, and some apps enforce a minimum window size that can cause them to overlap neighbouring cells.
Source: Hacker News · Summarized by HeadlinesBriefing