
Sumatra PDF
Evince
calibre
MuPDF
Adobe Reader
FBReader
PDF-XChange Editor
Okular is a universal document viewer based developed by KDE.

calibre
ReadEra
FBReader
Sumatra PDF
Speechy
LibriVox Audio Books Supporter
KOReader
Librera Reader for Android

Which is more popular?
Based on our record, Okular should be more popular than Librera Reader. It has been mentioned 44 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | okular.kde.org | librera.mobi |
| Pricing | — | |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Okular is recommended for students, educators, professionals, and any users who require a reliable and feature-rich document viewer capable of handling a wide range of file formats. It is particularly beneficial for those who value open-source software and need robust annotation and document management tools across different platforms.
No analysis of Librera Reader yet.
Walkthroughs and reviews on video.
okular, program for annotating your books in linux
More videos
Librera Reader app|How to use an app|How to use Librera Reader app|Librera Reader app kaise use kare
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Okular and Librera Reader. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Verdict: Okular is an open source and can be used free, which is probably its main advantage. At the same time, its basic functionality is meant to be not only highly competitive with PDF Expert but rather overcomes...
Okular is another open-source and cross-platform document viewer developed by KDE and is shipped as part of the KDE Application release.
We have no reviews of Librera Reader yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


If you mean signing as in "signing with your handwritten signature", you could use Okular () which easily allows you to do that. Filling out forms also works nicely. Source: almost 3 years ago
I was in a similar position lately until I found Okular. Have you tried it? https://okular.kde.org/. - Source: Hacker News / about 3 years ago
I would try Okular first, though, which is free and open source: https://okular.kde.org/. Source: over 3 years ago
I've been rather happy with Librera, although when reading foreign languages, I prefer KOReader for its locally installed dictionary lookups (you have to add them). Note that these are both reader software, first, and not advanced... - Source: Hacker News / almost 3 years ago
On Android, the text-to-speech I find is better with https://librera.mobi/. Source: over 3 years ago
I use Libera which has everything I need for a reader, to view full-screen is essential bc it makes use of all the space on phone. Source: over 3 years ago
When comparing Okular and Librera Reader, you can also consider the following products.

Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Compare Sumatra PDF to Okular or Librera Reader:


Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS...
Compare Evince to Okular or Librera Reader:

Read book files in EPUB, PDF, DOC, DOCX, RTF, TXT, DJVU, FB2, MOBI and CHM formats.
Compare ReadEra to Okular or Librera Reader:

FBReader is an e-book reader for various platforms. Features:
Compare FBReader to Okular or Librera Reader:
