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


The best open source PDF Reader alternative to SumatraPDF is Okular. If that doesn't suit you, our users have ranked more than 100 alternatives to SumatraPDF and many of them are open source PDF Readers so hopefully you can find a suitable replacement. Other interesting open source PDF Reader alternatives to SumatraPDF are Evince, MuPDF, KOReader and Librera Reader.
A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.




270 files for a "one format pony", that's in NO WAY the alternative of SumatraPDF handling dozens of formats using just one portable.exe
While Sumatra shines with speed , Lector is slow and de-loads pages when it goes out of focus


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


Because its open source and light weight
It cant run on windows as SumatraPDF does so is not a viable alternative


Zathura is a highly customizable and functional document viewer. It provides a minimalistic and space saving interface as well as an easy usage that mainly focuses on keyboard interaction.


Minimal user interface, keyboard-driven and a delight to use. However, it requires some time to get used to.
It cant run on Windows as SumatraPDF does so is not a viable alternative


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.

It cant run on Windows as SumatraPDF does so is not a viable alternative


Atril is a simple multi-page document viewer. It can display and print PostScript (PS), Encapsulated PostScript (EPS), DJVU, DVI, XPS and Portable Document Format (PDF) files. When supported by the document, it also allows searching for text, copying text to the clipboard...
qpdfview is a Qt-based tabbed document viewer using the Poppler library for PDF rendering and CUPS for printing. Support for the DjVu and PostScript formats can be added via plugins.

It cant run on Windows as SumatraPDF does so is not a viable alternative, However since SumatraPDF can run in Wine then SumatraPDF is a good Alternativeto Qpdfview


Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. Most of the tools are available as open source.

Extremely barebones, missing and incomplete features like page-at-a-time scrolling, bookmarks and context menus. It's like a beta version. It functions... but unless you're on a raspberry pi or something and need the light weight, just opening files in your browser is more functional.


Simple macOS PDF reader with ChatGPT integrated. You can chat with your local PDF. The returned response can cite the page number to ensure correctness.


Xreader is a document viewer capable of displaying multiple and single page document formats like PDF and Postscript.
The simplest PDF viewer. Safe (doesn't require permissions), lightweight (just 6,9MB) and modern.

literally a firefox PDF reader standalone. Slow, limited features, sluggish, memory hoarder.