Openlib is an open source app to download and read books from shadow library (Anna’s Archive). The App Has Built In Reader to Read Books.




SumatraPDF is described as 'A free, open-source viewer for Windows, supports PDFs, eBooks, Comics, with a simple, fast, and portable design prioritized for ease of use' and is a leading PDF Reader in the news & books category. There are more than 100 alternatives to SumatraPDF for a variety of platforms, including Windows, Linux, Android, Mac and iPhone apps. The best SumatraPDF alternative is Foxit PDF Reader. It's not free, so if you're looking for a free alternative, you could try Foxit PDF Reader or Okular. Other great apps like SumatraPDF are KDAN PDF, MuPDF, Adobe Acrobat Reader and Librera Reader.
Openlib is an open source app to download and read books from shadow library (Anna’s Archive). The App Has Built In Reader to Read Books.








Sioyek is a PDF viewer with minimal interface optimized for reading research papers and technical books.




Xodo is the ultimate cross-platform PDF viewer and annotator. Powerful, fast, and optimized for all phones and tablets, Xodo makes it easy to access, edit, share, sync, manage, sign, and more.




Discover uRead, your ultimate companion for reading and listening! Whether you’re a casual reader or a book enthusiast, uRead transforms your experience with advanced features and a user-friendly design.




Simple Android PDF viewer based on pdf.js and content providers. The app doesn't require any permissions.




A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.


Cool Reader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Understands a number of text document formats, suppurt OPDS (in new ui-opengl version). Fully customizable palette, text reformatting with any font size, font...




Native macOS app for viewing, annotating, and editing images and PDFs, featuring tools for cropping, rotating, resizing images, rearranging pages, full-screen viewing, markup, document merging, batch conversion, and export in multiple formats.




Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux.




PDF viewer for macOS supports scientific papers, annotations, highlights, bookmarks, split view, exporting notes, AppleScript, multiple annotation types, bibliography integration, full-screen, search, and compatibility with various macOS versions.

Document Viewer is a highly customizable document viewer for Android, fork of the last GPL version of EBookDroid .


Feature-rich, modern looking interface, powerful yet lightweight software with impressive fast loading time.