XPad has been discontinued and is no longer actively supported.
The original (very outdated) website from 2000 can be found here.
The software can still be downloaded. The trial versions are free.
For a full version -for personal use only-, you can contact me with the
serial number from the about box of XPad. I will sent you a free license-key.
For commercial use you still need to use the purchase-links on the original website.
However be warned: free support is no longer provided. For tailored versions/fixes
or other related work you may request a cost-estimate.