: Offers a selection of Russian-language books in FB2 and EPUB formats, often used by language learners to read classics and modern science.

: A reliable source for borrowing or downloading digital copies of Hawking's original English works and some translations, such as A Brief History of Time and The Illustrated Theory of Everything .

: Provides high-quality PDF versions of science-focused books, including The Theory of Everything , as part of their educational initiative.

The following platforms are known for hosting e-books in FB2, EPUB, and PDF formats: