JumpX is a keyboard-like input method for the Qt Palmtop Environment. It uses a layout for the letters which is optimized for one-finger-typing (as is performed with a stylus)
More information about the concept of a FITALY keyboard and why on a handheld this is an input method superior to the normal QWERTY keyboard can be found at http://fitaly.com/fitaly/fitaly.htm.
http://jumpx.sf.net says that the software was developed for the IPAQ. I installed the precompiled binary with zero problem on the SL-5500 running the original Sharp ROM. Other models might work, too.
Categories: Drivers, Libraries, Utilities