One of the new Windows 7 features is called AeroSnap, which improves the management of desktop windows. You can maximize/minimize desktop windows by dragging a window to the taskbar; if you drag it to the left side of the screen it will automatically fill half of the screen. This can be helpful if you have to switch between applications a lot or if you want to split windows.
For designers this might come in handy to place working tools on the right side of the screen and the image itself on the left side. By the way it will also work on two monitors!

Alright, you want to grab this Windows 7 gadget now?
Get it here! Keep in mind that this is still a beta, so please report possible errors.

Requirements:

Netframework 2
Windows Xp, Windows Vista

Windows 7 Themes

Please also visit http://windows7themes.net for more information