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 many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Okular are LibreOffice - Draw, Evince, MuPDF and KOReader.

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Okular alternatives are mainly PDF Readers, but if you're looking for Ebook Readers or Ebook Libraries you can filter on that. Other popular filters include Android, Linux, Android + Open Source, 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

     1669 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.

    109 SumatraPDF alternatives

    Cost / License

    Application type

    Platforms

    • Windows
    SumatraPDF screenshot 1
     
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    4
    23
    Comments about SumatraPDF as an Alternative to Okular
    Guest
    Negative
    14

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

    Review by a new / low-activity user.
    mirellanmal
    0

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

    idlesHand
    Positive
    0

    Tabs! and is also open source

    3 of 4 comments
    SumatraPDF icon
    SumatraPDF icon

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

    • SumatraPDF is Free and Open SourceOkular is also Free and Open Source
  2. LibreOffice - Draw icon

    LibreOffice - Draw

     311 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.

    98 LibreOffice - Draw alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    • Flathub
    LibreOffice - Draw screenshot 1
     
  4. Evince icon

    Evince

     459 likes

    Evince (or GNOME Document Viewer) is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt) and others. See Supported Document Formats for details.

    116 Evince alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • PortableApps.com
    • Flathub
    • GNOME
    Evince screenshot 1
     
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    2
    18
    Comments about Evince as an Alternative to Okular
    dszalkowski
    Negative
    0

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

    Guest
    Positive
    1

    There is windows compatible version this program.

    Review by a new / low-activity user.
    Evince icon
    Evince icon

    • Most users think Evince is a great Okular alternative.

    • Evince is Free and Open SourceOkular is also Free and Open Source
    • Evince is MinimalisticOkular is not according to our users
  5. MuPDF icon

    MuPDF

     157 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.

    90 MuPDF alternatives

    Cost / License

    Application type

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    • Xfce
    MuPDF screenshot 1
     
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    1
    Comments about MuPDF as an Alternative to Okular
    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 icon
    MuPDF icon
    • MuPDF is Free and Open SourceOkular is also Free and Open Source
  6. KOReader icon

    KOReader

     73 likes

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

    68 KOReader alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • Android
    • AppImageHub
    • Kobo Books
    • Flathub
    • F-Droid
    • Kindle Fire
    • Android Tablet
    KOReader screenshot 1
     
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    1
    Comments about KOReader as an Alternative to Okular
    arduR
    Positive
    0

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

    KOReader icon
    KOReader icon
    • KOReader is Free and Open SourceOkular is also Free and Open Source
  10. Firefox PDF Viewer (PDF.js) icon

    Firefox PDF Viewer (PDF.js)

     165 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.

    Cost / License

    Application type

    Platforms

    • Google Chrome
    • Opera
    • Mozilla Firefox
    Firefox PDF Viewer (PDF.js) screenshot 1
     
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    1
    Comments about Firefox PDF Viewer (PDF.js) as an Alternative to Okular
    Guest
    Positive
    1

    It works well and it works in Firefox

    Review by a new / low-activity user.
    Firefox PDF Viewer (PDF.js) icon
    Firefox PDF Viewer (PDF.js) icon
    • Firefox PDF Viewer (PDF.js) is Free and Open SourceOkular is also Free and Open Source
  11. Sioyek icon

    Sioyek

     22 likes

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

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Main view
     
  13. Kavita icon

    Kavita

     28 likes

    Lightning fast with a slick design, Kavita is a rocket-fueled self-hosted digital library which supports a vast array of file formats. Install to start reading and share your server with your friends. book reader, self hosted, manga, comics, free, manhwa, e readers, electronic...

    170 Kavita alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Cloudron
    Kavita screenshot 1
     
  14. uRead icon

    uRead

     9 likes

    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.

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    uRead screenshot 1
     
12 of 47 Okular alternatives