When comparing Gridsutra vs SizeUp, the Slant community recommends SizeUp for most people. In the question“What is the best window manager for Mac?” SizeUp is ranked 12th while Gridsutra is ranked 31st. The most important reason people chose SizeUp is:
SizeUp has user-configurable keyboard shortcuts for a set of pre-defined actions.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Good Adobe support
Gridsutra has Adobe support with the ability of stacking Adobe windows.
Pro Simple UI
The interface if Gridsutra is well thought through and easy to use.
Pro Window arrangement with a single click
Windows can be arranged or snapped in Gridsutra with a single click.
Pro Intuitive UI and delightful user experience
Pro A great tool for a reasonable price
Pro Highly flexible
Gridsutra works with most MacOS applications.
Pro Great drag and drop functionality
The drag and drop option in the layout gives freedom to the user for arrangement of any windows to any positions desired.
Pro Useful ignore/unignore feature
The ignore / unignore feature in Gridsutra allows the user to block unwanted applications to be listed in the layout option.
Pro Custom layout support

Pro Keyboard centric
SizeUp has user-configurable keyboard shortcuts for a set of pre-defined actions.
Pro Supports multiple monitors / spaces
Windows can be sent to different monitors and spaces. It can also be aligned as needed.

Pro Simple
SizeUp is easy and simple to use without having to configure.
Pro AppleScript support allows extending functionality
AppleScript permits adding features such as tiling all open windows. Additionally, FastScripts it allows the user to add keyboard shortcuts to AppleScripts.
Pro Menubar dropdown for shortcuts
Learning a bunch of keyboard shortcuts right off the bat may be difficult to remember at first, which is why a menubar shortcut for the app exists with all the shortcuts listed.
Cons
Con Nag window
If a license is not purchased there is a nag window (which suspends function) that pops up when loading the app (at user login). The nag pop-up is also summoned at certain time intervals and by performing a certain number of commands (manually or by keyboard shortcut).
Con No on-the-fly split screen window settings
Unlike some other tiling window managers, SizeUp has no way to change the size of split screen actions on-the-fly. Any time a user wants to change how much room on the screen a window takes up when using the split screen function, they will need to manually change the settings, which can be time consuming.
