Top 12 Open-Source Alternatives to Okular

Product categories

Document Converter Ebooks File Converter Note Taking PDF Creator PDF Editor PDF Readers And Editors PDF Tools Tool eBook Converter eBook Manager eBook Reader

Summary

The top open-source alternatives to Okular are MuPDF, calibre, and Firefox PDF Viewer (PDF.js). One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

MuPDF Landing Page
1

MuPDF

MuPDF is a lightweight PDF and XPS viewer.
Pricing:
- Open Source
#PDF Tools #PDF Readers And Editors #PDF Editor 20 social mentions
calibre Landing Page
2

calibre

Ebook manager, viewer & converter
Pricing:
- Open Source
#eBook Manager #eBook Reader #eBook Converter 546 social mentions
Firefox PDF Viewer (PDF.js) Landing Page
3

Firefox PDF Viewer (PDF.js)

PDF Viewer (aka pdf.js) is a new revolutionary extension using web standard technologies that...
Pricing:
- Open Source
#PDF Tools #PDF Readers And Editors #PDF Editor 25 social mentions
Atril Landing Page
4

Atril

Atril is a simple multi-page document viewer. Atril is a fork of Evince.
Pricing:
- Open Source
#PDF Tools #PDF Editor #Office & Productivity 21 social mentions
Foliate Landing Page
5

Foliate

A simple and modern eBook viewer.
Pricing:
- Open Source
#eBook Reader #Ebooks #eBook Manager 12 social mentions
PDFsam Landing Page
6

PDFsam

PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files
Pricing:
- Open Source
- Free
#PDF Tools #PDF Creator #PDF Editor 31 social mentions
DjVuLibre Landing Page
7

DjVuLibre

DjVuLibre: Open Source DjVu library and viewer
Pricing:
- Open Source
#PDF Tools #PDF Readers And Editors #File Converter 1 social mentions
Librera Reader Landing Page
8

Librera Reader

Librera Reader for Android
Pricing:
- Open Source
#eBook Reader #Tool #Ebooks 14 social mentions
KOReader Landing Page
9

KOReader

An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on...
Pricing:
- Open Source
#eBook Reader #Ebooks #eBook Manager 96 social mentions
Calibre Web Landing Page
10

Calibre Web

Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks...
Pricing:
- Open Source
#Ebooks #eBook Reader #eBook Manager 85 social mentions
Sioyek Landing Page
11

S

Sioyek

Sioyek is a PDF viewer designed for reading research papers and technical books.
Pricing:
- Open Source
#PDF Tools #PDF Editor #iPhone 18 social mentions
QPDF Landing Page
12

QPDF

QPDF is a command-line program that does structural, content-preserving transformations on PDF...
Pricing:
- Open Source
#PDF Tools #PDF Editor #PDF Creator 11 social mentions