Major players who have compiled collections of such ebooks include Bartleby , Librius , Glassbook , and Gutenberg . Dedicated ebook readers, in which the contents of a book are downloaded to a dedicated hardware device with a high quality screen and special capabilities for book-reading. Examples include Gemstar s REBs and Franklin s eBookman . These could be classed as examples of electronic-aided publishing, as opposed to electronic books in the purest sense of the term. Web-accessible ebooks, which are published on the provider s Web site and can be accessed for a fee.
Readers can purchase the books to receive indefinite access.
Potential reading devices include PCs, notebooks, palmtops, and even proprietary ebook devices. These are free for downloading, printing, and circulation. Only one user can borrow a title at a time, unless the library has paid for more than one copy. Top Classifying these manifestations of electronic books can be made meaningful by distinguishing between which aspects of the original paper book have been considered as most important. For example, some electronic books try to simulate mainly the logical aspects of the original paper book, while others are more concerned with simulating the physical components or a specific aspect, such as portability, of the paper book.