Thorium Reader screenshot

Thorium Reader

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Updated: 16 Jan 2026
2532 Stars

A cross platform desktop reading app, based on the Readium Desktop toolkit

Overview

Thorium Reader is an innovative desktop reading app that stands out in the crowded landscape of e-reading software. Built on the Readium Desktop toolkit, this cross-platform application is designed to provide users with a seamless reading experience across multiple devices. Whether you are a casual reader or a dedicated e-book enthusiast, Thorium Reader aims to enhance your literary journey.

Features

  • Cross-Platform Compatibility: Available on various operating systems, Thorium Reader allows you to access your books from any device with ease.
  • User-Friendly Interface: Designed with simplicity in mind, the app offers an intuitive layout that makes navigation and reading a breeze.
  • Support for Multiple Formats: Thorium Reader supports a wide range of e-book formats, ensuring that you can read virtually any book you download.
  • Customizable Reading Experience: Adjust font sizes, styles, and background colors to create a personalized reading environment that suits your preferences.
  • Bookmarks and Highlights: Easily mark your favorite passages and add notes, allowing for a more interactive reading experience.
  • Offline Access: Once downloaded, books can be read offline, making it convenient for reading on the go without needing an internet connection.
  • Integration with Reading Resources: The app enables easy access to various reading resources and platforms, expanding your reading options even further.