Good Notes FREE

Good Notes Free version is a great app for annotating over PDF files and organizing them on a neat little bookshelf as notebooks. Within those notebooks you can add multiple PDFs or insert images from the camera rolll. Contributed by Mike Oberdick.

Noteshelf $6.49

Write in crisp and fluid handwriting, annotate PDFs, sketch gorgeous drawings. Organize, search, and personalize your digital shelf of unlimited notebooks. Contributed by Brandt Schneider.

Notability $2.99

Notability is the best-selling note-taking app on iPad, iPhone and iPod touch. Sketch ideas, annotate documents, sign contracts, complete worksheets, keep a journal, jot travel notes, teach a class, make a presentation and much more. With iCloud support, your notes stay up to date on all your devices! Contributed by Brandt Schneider.