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

KlientBoost
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Winning by Design
Managed sales acceleration company, where we help to grow your business.

Which is more popular?
Based on our record, Okular seems to be more popular. 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 | cience.com |
| Pricing | — | |
| Company | — | Startup from the United States |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Okular yet.
CIENCE offers Orchestrated Outbound that includes tech-enabled research, multi-channel prospecting, lead response, and a unique sales enablement platform to build your enterprise.
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.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
okular, program for annotating your books in linux
More videos
Amazing Science Toys/Gadgets 1
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Okular and CIENCE. 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.
CIENCE offers a complete lead generation solution, combining human expertise with AI-driven tools like MemoryAI for multi-threaded outreach—something tools like Instantly.ai or Copilot.ai lack. Unlike Seamless.ai,...
Cience offers various tools for outbound lead generation, like appointment scheduling, email automation, and lead discovery. It identifies potential prospects, automates outreach to qualify, and moves them down the...
Similar to Belkins on the list, CIENCE is a renowned Callbox alternative offering both lead generation services & software tools to clients. They use a data-driven approach to generate high-quality leads, and focus...
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
Tracking CIENCE since Mar 2021.
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