Or BetterSnapTool, same developer as BetterTouchTool but just for window management.
I use it all the time, excellent app.
How come BetterSnapTool costs $2 but BetterTouchTool is free?
Also, does BetterSnapTool allow centering windows? I see that it is great for splitting displays in half or into four.
Also, does BetterSnapTool allow centering windows?