Desktop (Windows, Mac, Linux)

• Thorium Reader: Free, open-source, and highly accessible for Windows, macOS, and Linux.

• Calibre: A powerful library manager and viewer for importing and reading books.

• Adobe Digital Editions: A standard desktop program that supports complete tables of contents for EPUBs.

• Sumatra PDF: A lightweight, fast reader for Windows that also supports EPUB files. [1, 2]

Mobile (Android & iOS)

• Apple Books: The built-in, default app for opening EPUB files on iPhone, iPad, and Mac.

• Google Play Books: A clean app for Android and iOS that lets you upload and sync your own EPUB files.

• ReadEra: A free, ad-free offline reader for Android and iOS supporting multiple formats.

• Moon+ Reader: A feature-rich Android reader with deep customization options.