Multiple Monitor Software

I have found a few pieces of software that make having multiple monitors even better!

UltraMon is probably the best multi monitor software out there. It manages your wallpaper, screen saver, and gives you a great multi monitor task bar. It also gives you a window position tool bar and a few advanced settings to help manage those extra monitors. The big disadvantage is price, it's pretty pricey for a utility program.
http://www.realtimesoft.com/ultramon/

Background Switcher is a wallpaper manager that can be used with multiple monitors. It's freeware and it is by far the best wallpaper manager I have ever used! It connects to flickr, phanfare, smugmug, picasa, facebook, and yahoo! image search. Oh, and of course can be directed at a folder (or a list of pictures) on your computer. It allows you to have different images on each monitor, and will switch images at an Interval of your choosing. It can also display the images in several modes including thumbnail mosaics, 4-picture montage, or snap shot scrapbook. Background Switcher is a really amazing program with many many options, and I would suggest it to anybody.
http://www.johnsadventures.com/software/backgroundswitcher

DisplayFusion is a great freeware wallpaper manager for multiple monitors. It lets you use different wallpaper for each monitor or stretch a single image across all monitors. It also integrates with flickr giving you the ability to use flickr to find and download new backgrounds. DisplayFusion also includes some hotkeys to help you manage your windows.
http://www.binaryfortress.com/displayfusion/


Multi-Monitor TaskBar is a freeware package that adds a taskbar to all of the monitors (Normally there is only the task bar on the primary monitor). As you move a window from monitor to monitor that window also moves to the correct task bar. It also adds an "Arrow" toolbar on the top of each window. The toolbar gives you buttons to move that window from monitor to monitor, or stretch it across all monitors. It also has a hotkey that jumps the window from screen to screen.
http://www.mediachance.com/free/multimon.htm


If you don't have multiple monitors maybe this software can help. Maxivista lets a single computer take over another computers monitor as a secondary display. So if you have two computers at your desk, say a laptop and a desktop, you could use Maxivista to let you use the laptop screen as a second monitor for the desktop (Or the other way around).
http://www.maxivista.com/