When comparing ShiftIt vs Window Tidy, the Slant community recommends ShiftIt for most people. In the question“What is the best window manager for Mac?” ShiftIt is ranked 4th while Window Tidy is ranked 24th.
Ranked in these QuestionsQuestion Ranking
Pro Easy to configure
ShiftIt is configured through a simple UI where you simply press the hotkeys you wish to map to a certain action.
ShiftIt is very straight-forward to use for most frequent usages.
Pro Open source
Pro Easy drag and drop interface
When you want to resize a window you just drag it on the screen and your configured workspaces appear immediately, semi-transparent. Then you just drag and drop your window above the configuration that you want to use.
Pro Allows multiple workspace configurations
Window Tidy facilitates not just window sizes, but windows that are precisely sized to fit together to fill up the screen.
Pro Fine tune window sizes
You can set up windows to fit as large or as small of an area on your screen as you would like. For example, if you want a 1/3 left, 1/3, center, 1/9 top right, 1/9 center right, and 1/9 bottom right, you can and it is easy to set up.
Con A little slow
Similar to Spectacle, but it has a few more features, such as being able to pick the size adjustment increments. Spectacle was a little faster, though. Repeated size changes or moves in succession can cause it to wait for it to complete.
Con Imprecise when readjusting sizes
Con Doesn't support moving windows between workspaces
There's no way to move a window to a different workspace with hotkeys in ShiftIt.
Con Workspaces don't show up when you drag a window
Workspaces will only appear on one desktop, but not the others.