At first glance, Open Book Publishers may look like an ordinary bookselling site. What makes the literary hub unique is that it not only publishes books in traditional print and ebook formats, but it also publishes "free online editions of every title in PDF, HTML and XML formats that can be read via our website, downloaded, reused or embedded anywhere." This online format also allows for more interactive texts, as authors can embed images, audio, and more. Readers can browse the latest titles on the home page or sort by categories, including Digital Humanities and Sciences, using the left-hand panel. Educators may want to pay special attention to the selection of Textbooks and Learning Guides. The site also provides information about the submission process and hosts a blog packed with book reviews and other insights. In addition to sales and donations, Open Book Publishers receives financial support from the Polonsky Foundation, the Thriplow Charitable Trust, the Jessica E. Smith and Kevin R. Brine Charitable Trust, and The Progress Foundation.