SizeUp for Mac makes up for one of the few features Mac users often miss from Windows -- the ability to quickly and easily size and resize windows by dragging them to different parts of the screen. The app allows you to do that and much more, identifying numerous custom sizing options, attaching them to hot keys, and running them whenever the app is open.
When you open SizeUp for Mac, you will need to give it access to your accessibility options which it does walk you through, and you can define all of your resizing options. From there, you can use the drop-down menu in your task bar or you can set shortcuts to use when you want to resize a window. The current window will then resize to fit the defined template, quickly and easily. The app runs quietly in the background, when you do open it, the interface is clean and easy to use, and it never slows down or eats up excess battery as some background apps tend to do. The result is an app that adds much-needed functionality to OS X with few drawbacks.
If you miss the drag-and-drop resize feature of Windows or would like to try out something similar on your Mac, download and try SizeUp for Mac. The app is free to try with a small pop-up that will ask you to sign up for the full version ($13), periodically. There are no trial restrictions, however, so you can get a good idea of what this app offers in your initial uses.
Editors' note: This is a review of the trial version of SizeUp for Mac 1.6.2.