OpenMacApps

Thorium Reader

EDRLab's accessible reading app for EPUB, PDF, DAISY books, audiobooks and comics, with OPDS catalogs and read aloud.

GetView Source
brew install --cask thorium

BSD-3-Clause · Free download · Downloads from github.com

License
BSD-3-Clause
Open source
Category
Productivity
Source
GitHub
edrlab
Verified
2026

About Thorium Reader

Thorium Reader is a desktop reading app from EDRLab, the non-profit behind the Readium toolkits. It opens EPUB 2 and 3 books in reflowable and fixed layouts, PDF files, DAISY accessible books, audiobooks and Divina comics, and can browse and sign in to OPDS catalogs such as library lending services.

Reading settings cover fonts, spacing, columns, sepia and night modes. It keeps bookmarks, annotations and your place in each book, searches inside a publication, plays synchronized media overlays and reads text aloud. Accessibility is a stated priority, including use with VoiceOver on the Mac.

Separate Apple silicon and Intel disk images are published on GitHub. The official builds can open books protected with the Readium LCP DRM using an additional component that is not part of the open-source code; a build made from the public repository only handles the basic LCP test profile.

Information

Source code
edrlab/thorium-reader
License
BSD-3-Clause
Website
thorium.edrlab.org
Download
github.com
Homebrew
thorium
Category
Productivity
Topics
Ebook readers
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