Open Source Okular AlternativesTop PDF & Ebook Readers like Okular

The best open source alternative to Okular is SumatraPDF. If that doesn't suit you, our users have ranked more than 100 alternatives to Okular and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Okular are Evince, LibreOffice - Draw, KOReader and MuPDF.

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

  1. SumatraPDF icon

    SumatraPDF

     1699 likes

    This free, open-source viewer for Windows supports multiple formats like PDF, eBooks (ePub, Mobi), CHM, and Comic Books (CBZ, CBR). Prioritizing simplicity and speed, it offers a lightweight, portable design with a minimalist interface, catering to users seeking fast and efficient document viewing.

    128 SumatraPDF alternatives

    Cost / License

    Application types

    Platforms

    • Windows
    SumatraPDF screenshot 1
     
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    4
    SumatraPDF vs Okular Comments
    Guest
    Negative
    15

    Sumatra doesn't have comments and fill forms functionality as Okular does.

    mirellanmal
    0

    Ugly UI, logo and icon. It's nice with FOSS, but I'll go with Okular.

    Guest
    Positive
    1

    Lightweight and fast. Better if only wants to read documents

    3 of 4 comments
    • SumatraPDF is Free and Open SourceOkular is also Free and Open Source
    • SumatraPDF is CustomizableOkular is not according to our users
  2. Evince icon

    Evince

     465 likes

    Supports viewing and editing PDF annotations, displays multiple formats such as PDF, Postscript, DjVu, comic books, TIFF, DVI, XPS, remembers per-document zoom and position, features search, table-of-contents navigation, SyncTeX integration, and printing.

    133 Evince alternatives

    Cost / License

    Application types

    Platforms

    • Linux
    • Flathub
    • PortableApps.com
    • GNOME
    Evince screenshot 1
     
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    2
    Evince vs Okular Comments
    dszalkowski
    Negative
    0

    Gnome's project supplies no link of a Windows version.

    Guest
    Positive
    1

    There is windows compatible version this program.

    • Evince is Free and Open SourceOkular is also Free and Open Source
    • Evince is MinimalisticOkular is not according to our users
  4. LibreOffice - Draw icon

    LibreOffice - Draw

     324 likes

    Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.

    103 LibreOffice - Draw alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    • Flathub
    LibreOffice - Draw screenshot 1
     
  5. KOReader icon

    KOReader

     83 likes

    An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.

    88 KOReader alternatives

    Cost / License

    Application types

    Platforms

    • Linux
    • Android
    • Android Tablet
    • AppImageHub
    • Kobo Books
    • Flathub
    • F-Droid
    • Kindle Fire
    • Linux Mobile
    KOReader screenshot 1
     
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    1
    KOReader vs Okular Comments
    arduR
    Positive
    0

    okular on android is pretty minimal. KOReader provides extensive set of features including favourite files, dark mode, page history etc.

    • KOReader is Free and Open SourceOkular is also Free and Open Source
  7. MuPDF icon

    MuPDF

     163 likes

    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.

    108 MuPDF alternatives

    Cost / License

    Application types

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    • Xfce
    MuPDF screenshot 1
     
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    1
    MuPDF vs Okular Comments
    arduR
    Negative
    0

    MuPdf is very minimal, it just opens the file picker. It does not maintain a recent file history or save page history effectively. In long pdfs/ebooks, when you jump to a page and then press back to exit it, instead of exiting the app takes you to front-page and then exits, effectively nullifying any page saving capabilities.

    • MuPDF is Free and Open SourceOkular is also Free and Open Source
  9. Foliate icon

    Foliate

     66 likes

    A simple and modern eBook viewer for Linux desktops.

    70 Foliate alternatives

    Cost / License

    Application types

    Platforms

    • Linux
    • BSD
    • Snapcraft
    • Flathub
    Foliate screenshot 1
     
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    1
    Foliate vs Okular Comments
    dimchkin
    Positive
    0

    Opens up big epubs in a breeze, where Okular struggles

    • Foliate is Free and Open SourceOkular is also Free and Open Source
    • Foliate is MinimalisticOkular is not according to our users
  10. Firefox PDF Viewer (PDF.js) icon

    Firefox PDF Viewer (PDF.js)

     169 likes

    PDF Viewer (aka pdf.js) is a new revolutionary extension using web standard technologies that allows you to display within Mozilla Firefox almost all PDF files found on the web without a plugin.

    101 Firefox PDF Viewer (PDF.js) alternatives

    Cost / License

    Application type

    Platforms

    • Google Chrome
    • Opera
    • Mozilla Firefox
    Firefox PDF Viewer (PDF.js) screenshot 1
     
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    1
    Firefox PDF Viewer (PDF.js) vs Okular Comments
    Guest
    Positive
    1

    It works well and it works in Firefox

    • Firefox PDF Viewer (PDF.js) is Free and Open SourceOkular is also Free and Open Source
  11. Episteme Reader icon

    Episteme Reader

     12 likes

    Episteme Reader is an offline-first application designed for reading various document formats. It leverages native Android technologies and C++ libraries to provide a performant reading experience with customization capabilities.

    60 Episteme Reader alternatives

    Cost / License

    Application types

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    • Windows
    Episteme Reader screenshot 1
     
  13. Sioyek icon

    Sioyek

     24 likes

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

    51 Sioyek alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Main view
     
  14. LEKTRA icon

    LEKTRA

     17 likes

    High-performance viewer for documents and images offering split tabs, customizable single or book layouts, portals for side-by-side sections, instant search, line highlight, annotation tools, link hints, searchable highlights, session management, and TOML config.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    LEKTRA screenshot 1
     
12 of 53 Okular alternatives