BookBag Plus - Version 4.4.0 BookBag is your complete book and personal library organization software for Palm OS® handhelds, Pocket PC or Windows Mobile handhelds, and Windows PCs! Keep track of books, magazines, etc. that you own, have read, have checked out, want to read/buy, and more. Quickly determine when books are due. Multiple sort and filter options. Define your own categories, ratings, formats lists. Comprehensive list of fields. Internet data lookup and download.