I'm a big fan of the Windows 7 keyboard shortcuts that resize your current window. Since I do a lot of coding on a laptop screen, it's really important to be able to quickly show two windows side by side. I've been using SizeUp to mimic that behavior on OS X, but I knew it would be pretty simple to roll my own. So here it is, in about 110 lines of Objective-C. The exact keys used in Windows are already taken in OS X, so here's the keyboard shortcuts I used and their Windows equivalents:

Action	OS X	Windows 7
Fit window to left half of screen	Command+Option+Left	Windows+Left
Fit window to right half of screen	Command+Option+Right	Windows+Right
Fit window to whole screen	Command+Option+Up	Windows+Up

Install

This will download the progam to /Applications, download a config file that will keep the program running across reboots, give the program execute permissions, and start it up with launchd.

curl -L -o /Applications/ResizeShortcuts https://github.com/theandrewdavis/osx-resize-shortcuts/releases/download/0.3/ResizeShortcuts
mkdir -p ~/Library/LaunchAgents
curl -L -o ~/Library/LaunchAgents/com.ResizeShortcuts.plist https://github.com/theandrewdavis/osx-resize-shortcuts/releases/download/0.3/com.ResizeShortcuts.plist
chmod ug+x /Applications/ResizeShortcuts
launchctl load ~/Library/LaunchAgents/com.ResizeShortcuts.plist

Uninstall

This will un-schedule the program in launchd and delete the program files.

launchctl unload ~/Library/LaunchAgents/com.ResizeShortcuts.plist
rm -f /Applications/ResizeShortcuts ~/Library/LaunchAgents/com.ResizeShortcuts.plist

References

I wrote this with the help of the several excellent code samples and references below:

• Tapping keyboard events
• Resizing windows and the Accessibility API
• Get the screen size
• launchd