Open Source SumatraPDF Alternatives for Windows

There are many alternatives to SumatraPDF for Windows if you are looking for a replacement. The best open source Windows alternative is Okular. If that doesn't suit you, our users have ranked more than 100 alternatives to SumatraPDF and 18 are open source and available for Windows so hopefully you can find a suitable replacement. Other interesting open source Windows alternatives to SumatraPDF are MuPDF, Koodo Reader, Sioyek and Lector - PDF Reader.

filter to find the best alternatives

SumatraPDF alternatives are mainly PDF Readers, but if you're looking for Ebook Readers or Text to Speech Services you can filter on that. Other popular filters include Mac, Android, Linux, Android Tablet, Windows + Open Source, Windows and iPad. These are just examples - use the filter bar below to find more specific alternatives to SumatraPDF.
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Alternatives list

  1. Okular icon

    Okular

     480 likes
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    Multi-platform document viewer offering extensive format support, including PDF, comics, images, EPUB, and Markdown, with annotation tools, sidebar previews, text-to-speech, DRM management, cross-platform compatibility, and integration with KDE Frameworks libraries.

    113 Okular alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • BSD
    • KDE Plasma
    • Snapcraft
    • Linux Mobile
    • Flathub
    • Haiku
    Okular screenshot 1
     
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    31
    Comments about Okular as an Alternative to SumatraPDF
    Guest
    Positive
    1

    Because both programs are design to see documents.

    Review by a new / low-activity user.
    veruzian
    Positive
    0

    If you want a basic PDF viewer, this will probably fit the bill. It's simple and ligthweight. I used to use Foxit Reader, and found Okular to be a good FOSS replacement.

    Review by a new / low-activity user.
    SumatraPDF Icon
    Okular icon

    • Most users think Okular is a great SumatraPDF alternative.

    • Okular is the most popular Linux alternative to SumatraPDF.

    • Okular is the most popular Open Source alternative to SumatraPDF.

    • Okular is Free and Open SourceSumatraPDF is also Free and Open Source
  2. MuPDF icon

    MuPDF

     157 likes
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    MuPDF offers a highly versatile PDF, XPS, and eBook interpreter, customizable as a renderer, viewer, or toolkit. Features include digital signatures, redactions, form filling, annotations, and page manipulation, ideal for mobile, eBooks, and embedded apps supporting Java, C++, and Python.

    89 MuPDF alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    • Xfce
    MuPDF screenshot 1
     
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    14
    Comments about MuPDF as an Alternative to SumatraPDF
    Guest
    Positive
    3

    This is the core application within SumatraPDF so should be faster but with limited menus

    Review by a new / low-activity user.
    Guest
    Positive
    2

    While the MuPDF library is very lightweight, this reader is more a proof of concept than a lightweight GUI. The MuPDF download is about 70 Mb, Sumatra is less than 10.

    Review by a new / low-activity user.
    SumatraPDF Icon
    MuPDF icon

    • Most users think MuPDF is a great SumatraPDF alternative.

    • MuPDF is Free and Open SourceSumatraPDF is also Free and Open Source
  4. Koodo Reader icon

    Koodo Reader

     58 likes
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    Koodo Reader is an all-in-one e-book reader that can help you better manage and study your e-books. It's free and open-source.

    28 Koodo Reader alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Flathub
    Koodo Reader screenshot 1
     

    • Koodo Reader is the most popular Web-based alternative to SumatraPDF.

    • Koodo Reader is Free and Open SourceSumatraPDF is also Free and Open Source
    • Koodo Reader is CustomizableSumatraPDF is not according to our users
  5. Sioyek icon

    Sioyek

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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Main view
     
  6. Lector - PDF Reader icon

    Lector - PDF Reader

     15 likes
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    A simple PDF Reader built using Electron and PDF.js.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    Tabbed View
     
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    4
    Comments about Lector - PDF Reader as an Alternative to SumatraPDF
    SWMANNN
    Positive
    3

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

    Guest
    Negative
    2

    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

    Review by a new / low-activity user.
    Guest
    Negative
    1

    While Sumatra shines with speed , Lector is slow and de-loads pages when it goes out of focus

    Review by a new / low-activity user.
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    3 of 4 comments
    SumatraPDF Icon
    Lector - PDF Reader icon

    • Most users think Lector - PDF Reader is a great SumatraPDF alternative.

    • Lector - PDF Reader is Free and Open SourceSumatraPDF is also Free and Open Source
    • Lector - PDF Reader is MinimalisticSumatraPDF is not according to our users
  7. Cool Reader icon

    Cool Reader

     66 likes
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    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...

    93 Cool Reader alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    • Android
    • Android Tablet
    • Haiku
    Desktop version
     
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    11
    Comments about Cool Reader as an Alternative to SumatraPDF
    Guest
    Negative
    1

    Last time I tested it could not read any PDFs as SumatraPDF does so is not a viable alternative

    Review by a new / low-activity user.
    Guest
    Positive
    0

    its good for a lot of formats to read

    Review by a new / low-activity user.
    SumatraPDF Icon
    Cool Reader icon

    • Some users think Cool Reader is a great SumatraPDF alternative, some don't.

    • Cool Reader is Free and Open SourceSumatraPDF is also Free and Open Source
  9. WinDjView icon

    WinDjView

     62 likes
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    WinDjView is a fast, compact and powerful DjVu viewer for Windows with tabbed interface, continuous scrolling and advanced printing options. It uses the free DjVuLibre library to decode DjVu documents. DjVu is a web-centric format and software platform for distributing documents...

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • PortableApps.com
    WinDjView screen
     
  10. Mcomix icon

    Mcomix

     36 likes
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    MComix is an user-friendly, customizable image viewer. It is specifically designed to handle comic books, but also serves as a generic viewer. It reads images in ZIP, RAR, 7Zip or tar archives as well as plain image files.

    46 Mcomix alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • Xfce
    Mcomix screenshot 1
     
  11. Xpdf icon

    Xpdf

     12 likes
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    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.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Xpdf screenshot 1
     
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    1
    Comments about Xpdf as an Alternative to SumatraPDF
    zlelmefs
    Negative
    0

    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.

    SumatraPDF Icon
    Xpdf icon

    • Most users think Xpdf is a great SumatraPDF alternative.

    • Xpdf is Free and Open SourceSumatraPDF is also Free and Open Source
    • Xpdf is MinimalisticSumatraPDF is not according to our users
  13. PDF4QT icon

    PDF4QT

     8 likes
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    Open-source PDF viewer and editor using Qt framework, featuring hardware-accelerated rendering, encryption, multithreading, text-to-speech, annotation tools, form filling, high-res monitor support, document compression, audio book conversion, and signature validation.

    98 PDF4QT alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • Flathub
    PDF4QT screenshot 1
     
  14. NightPDF icon

    NightPDF

     4 likes
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    Dark Mode PDF reader.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    read dark pdf in NightPDF
     
12 of 18 SumatraPDF alternatives