Some software for tablet PC

• Stroke (gesture recognition)
  • I find easystroke is the best so far. To make it easier to enable/disable easytroke, (because several gesture recognition programs in system may conflict, for example, there is gesture recognition in firefox too.) I write a small patch to disable/enable easystroke with left button, which can be downloaded from here.
• Note taking with pen
  • I think xournal is very good. It can be used to add annotations to PDF files.