DemoHelper is a lightweight portable software for Microsoft Windows operating systems that will aid the user during presentations. It adds two new possibilities to the computer system. The first is to zoom in and move around on the computer screen while the second allows to draw on the computer monitor.
Both functions can be triggered by pressing hotkeys, namely the combination [CTRL SHIFT 1] for zooming ing and [CTRL SHIFT 2] for drawing on the screen. It has to be noted that it is possible to draw on the screen after zooming in at least once without having to press the drawing hotkey first.
Both hotkeys can be changed in the program’s options. The only other parameters that can be changed in the options are to define a time in seconds after which drawings on the screen will disappear automatically and if the mouse cursor should be captured.

The software program uses less than 3 Megabytes while running on the computer system which together with its tiny size of just 76 Kilobytes makes it an ideal companion for a portable device or presentation disk. It is compatible with Windows 2000, Windows XP, Windows Vista and will probably also run on Windows Server and Windows 7.
DemoHelper is definitely not the first software program review of a software that helps spice up presentations. Other applications that offer similar features are Computer Whiteboard or Zoom It.
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Link to official site : http://tools.tortoisesvn.net/DemoHelper
The problem with these kinds of tools is that once you zoom in, your screen freezes so you can’t continue to move your mouse, typing the keyboard for demonstration or screen casts. ZoomIt has the same problem. Is there any tool without this limitation?
@Guy:
Try Compiz. It does zoom, zoom follow mouse, and other nice, configurable zoom tricks. It does not affect the keyboard usage at all. It also has draw-on-screen capability.
@Dotan:
Can you post the link to Compiz? I can’t find it…
Also see ZoomIt http://technet.microsoft.com/en-us/sysinternals/bb897434.aspx
@Guy:
http://www.google.com/search?q=compiz
@Dotan:
Already did this:
“Compiz is a compositing window manager that uses 3D graphics acceleration via OpenGL”
Are you sure?
Yes, I use Compiz all the time, it’s always running on my computer. I use it for the desktop effects (wobbly windows and such), and the accessibility enhancements (zoom, negative colours). Try looking for Compiz on Youtube, it does a lot of stuff.
@Dotan:
I need a tool for Windows, not Linux,,,