Xournal for Linux: http://xournal.sourceforge.net/
Jarnal – cross platform, runs on Java: http://sourceforge.net/projects/jarnal/
Journal – Windows proprietary
–you can read about them in wikipedia.
These are note-taking applications, which can also be used to edit or annotate pdf files. You can insert a cursor to type in text, or use a mouse or graphic pen to utilize handwriting. Of course, the pen is easier…mouse is a bit awkward. There are a few colors + eraser and some other things I haven’t figured out yet.
The main use I’ve made so far of the first two is to add notes to pdf files for my own use. I haven’t used journal.
Wish I’d known about them when I was wanting to fill out postal forms for bulk mailing for OMUG! Would have been so much easier than my workaround way.
Sr. Dorothy