Application that allows you to get the features of Windows Snap functionality under older versions of Windows. Windows Snap in Windows 7 allows you to drag the application window to the edge of the screen, which automatically sets the window size to occupy half or the entire screen. PowerResizer allows you to do something like this for Windows XP, and what's more - it also allows you to automatically and dynamically adjust the size of the remaining windows on the desktop to the size of the application of your choice, so as to get the most out of the space available at a given screen resolution.