Here is a summary of the software discussed in the article

#1 note-taking
#2 Corel's Grafigo designed for tablets.
#3 Alias' Sketchbook
#4 Zinio Reader software
#5 Microsoft Reader
#6 Adobe Systems’ Acrobat Reader
#7 Groove Networks’ collaboration software lets multiple users view and modify the same sketches and notes simultaneously.
#8 FranklinCovey, a company which makes paper personal organizers, has introduced a Tablet PC version that handles appointment scheduling, to-do lists, note-taking and so forth.
#9 Specialized software products for health-care workers, architects and others.