Blazing Fast MacOS Window Snap Manager

After years on XFCE, I couldn’t live without true magnetic window tiling. macOS still hasn’t caught up, so I built a tiny, pure Lua script for Hammerspoon that fills the gap. It delivers blazing-fast, multi-monitor window snapping just drag to an edge or corner and the window lands exactly where you expect.

✨ Why you’ll love it

Drag gesture	Result
Left edge	Full-height, left half
Right edge	Full-height, right half
Any corner	Perfect quarter-tile

• Feels native – window hops in/out of zones while you still hold the mouse.
• Pixel-accurate – when you leave a zone the window stays glued to your cursor.
• Works on every display – whichever monitor the pointer is over.
• Zero lag, zero animation – as snappy as XFCE.
• One-file plugin – clone, add one line to init.lua, done.

⚡️ Quick install

First of all you need to install Hammerspoon https://www.hammerspoon.org/

After that clone this repository into your User hammerspoon directory

# clone into your Hammerspoon config directory
~/.hammerspoon/macos-window-snap
~/.hammerspoon/init.lua

Open Hammerspoon preferences and select Launch Hammerspoon at login, click the hammerspoon toolbar icon and hit Reload Config and you are ready to go.