This page is a list of external applications that interface with the wacom driver in one way or another.
CellWriter is a grid-entry natural handwriting input panel. As you write characters into the cells, your writing is instantly recognized at the character level. When you press Enter on the panel, the input you entered is sent to the currently focused application as if typed on the keyboard. It also toggles to an on-screen keyboard. You distribution should offer it in its package manager. Located at: http://risujin.org/cellwriter/ and at: http://code.google.com/p/cellwriter/
Magick Rotation is a Python GTK app. that supports automatic rotation for Dell, HP, and Lenovo tablet PCs. It's located on Launchpad at: https://launchpad.net/magick-rotation
The xinput_calibrator is a generic touchscreen calibration program for X.Org. It's located at freedesktop.org: http://www.freedesktop.org/wiki/Software/xinput_calibrator