MS Power Point.

Though many people don’t know it, PowerPoint has always allowed users to do something like freehand drawing on individual slides and then save the drawings. Working with a Tablet PC, drawing on a PowerPoint presentation is so simple that the program becomes a powerful virtual whiteboard, where you can annotate slides as you talk or just bring up blank slides and use them like a series of blank whiteboards. Then, at the end of class, you can save your work. Click here for a short help video.

InkyBoard.

InkyBoard is a great application in part because it does so very little. It's a virtual whiteboard, and that's about it. InkyBoard opens on a blank white screen which you can decorate with pen and highlighter tools. You can also, of course, use the eraser tool to erase the lines you've drawn, and you can use the "lasso" tool to select bits of your drawing to move around the screen. When you run out of screen space, you can click a right-arrow icon in the toolbar to open a second blank whiteboard slide (and then a third and a fourth and so on). You can then shuttle back and forth between your slides using the back and forward arrows in the toolbar. When you're done, you can save all your slides as one .xml file, which will open in Inky Board whenever you want it. (You can also choose to save individual InkyBoard slides in a more exportable format, or, if you're using OneNote, you can save your whiteboards directly into it.) InkyBoard has three advanced features worth mentioning here. (1) Under "Draw," you can choose "Recognize Shapes," and Inky Board will turn your sloppy circles and triangles into tidy, nicely-drawn ones.  (2) Also under "Draw," you can choose "Convert Handwriting to Text," which will do just that.  And finally, the coolest feature of all is that (3) you can use the slider at the right side of the toolbar to make InkyBoard more or less transparent; that means, practically, that you can make InkyBoard about half transparent and then annotate whatever is underneath it on your computer screen--maybe a paper or a web page.  (I planned a help video for this app, but a quirk in its design makes it impossible to record with my screen-capture tool.) Download here.

Also Consider as Potential “Whiteboard” Apps:

1. •  MS Word
   

2. •  MS Windows Journal
   

3. •  MS OneNote