[guestbest]

What are some good applications which require stylus support on Linux?

[WillAdams]

Annotating and marking up PDFs.

Drawing in apps such as Inkscape and Arita.

Working up 3D models using OpenSCAD Graph Editor.

Taking notes w/ a pen in class using Write by Stylus Labs or Journal.

[WillAdams]

Xournal, not Journal.