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Okular — PDF (Open Source)

Okular is an open-source PDF solution from KDE. Compare it against 60 other PDF tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Okular?

Okular is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under PDF and published by KDE. Buyers typically evaluate Okular when they need a dependable PDF option and want to weigh the trade-offs between free, open-source and paid tools before committing.

Okular alternatives

If Okular isn't the right fit, compare these PDF alternatives side by side:

ABBYY FineReaderAdobe Digital EditionsAdobe ReaderApache PDFBoxBluebeam RevuBullzip PDF PrinterCutePDFEvinceFoxit PDF ReaderGhostscriptGhostviewIssuuJasperReportsJavelin PDF Reader

Frequently asked questions

Is Okular free?
Yes. Okular is open source and free to use, with no purchase cost for the core product.
What are the best Okular alternatives?
Popular PDF alternatives to Okular include ABBYY FineReader, Adobe Digital Editions, Adobe Reader, Apache PDFBox. See the full list of PDF on FreeSoftwareX.
What type of software is Okular?
Okular is an open-source PDF tool developed by KDE.

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