DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
Virtual Magnifying Glass - Virtual Magnifying Glass, a free, open source, screen magnification program for Windows, Linux, FreeBSD and Mac OS X. Free full version download and instructions for use.
Mizage Divvy - Divvy is an entirely new way of managing your workspace.
Magnifixer - Magnifixer is a screen magnifier utility.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
ZoomIt - Presentation utility for zooming and drawing on the screen.