iBook

iBook refers to two related, but distinct, Apple products. The first is the iBook line of portable Macintosh computers introduced in 1999 and designed for education and home users. The original iBook G3 used a distinctive translucent colored case and a clamshell lid with an integrated handle, and it helped popularize wireless networking in laptops. Subsequent models, including the iBook G4, moved to a white case and higher performance while maintaining a focus on portability and education markets. The iBook line was gradually replaced by the MacBook line in 2006, as Apple adopted Intel processors and standardized its consumer notebooks.

iBooks represents Apple's digital publishing ecosystem for e-books and related content. Launched in 2010 as a storefront and reading app for iOS devices, the iBooks Store offered e-books (and later audiobooks) in Apple’s ecosystem, with content typically delivered in the ePub format and protected by digital rights management. Apple later released iBooks Author in 2012 to enable publishers and educators to create interactive textbooks. In 2018 Apple rebranded the service as Apple Books and unified the reading experience across iOS, iPadOS, and macOS, with the Books app replacing the prior iBooks app in many contexts.