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Lithium: EPUB Reader vs Secure PDF Viewer

A side-by-side look at Lithium: EPUB Reader and Secure PDF Viewer. For an in-depth review of either product, follow the links below.

Lithium: EPUB Reader

Lithium: EPUB Reader

News & Books

Lithium is a free, open-source EPUB reader for Windows, Linux, and macOS. It provides a clean, ad-free reading experience for EPUB ebooks with support for bookmarks, notes, highlights, dictionaries, and more.

epubebookreaderopen-source
Secure PDF Viewer

Secure PDF Viewer

Security & Privacy

Secure PDF Viewer is a free program that allows you to view PDF files safely. It opens PDF files in a sandboxed environment to prevent potentially malicious code in PDFs from infecting your device.

pdfviewersecuresandbox