"Rotate your desktop to the left or right via an interface with four arrows."
Twirly is a simple software application directed especially at people who need to turn or rotate their screen, for example to look at videos or photos and edit them. The program works with most graphics cards in any Windows XP or Vista system that has Microsoft .NET Framework installed.
To control screen movements you can use the arrow keys either in the program or on the keyboard. The left and right arrows move it, then the up key returns it to the default position. The Twirly user interface only has these keys.
Twirly requires no installation, just download it and start to use it. It is completely free and only needs 80KB of space.