Best Open Source Windows PDF Software 2026

PDF Software for Windows

PDF Windows OSI-Approved Open Source Spanish Clear Filters

Browse free open source PDF software and projects for Windows below. Use the toggles on the left to filter open source PDF software by OS, license, language, programming language, and project status.

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1

NAPS2 - Not Another PDF Scanner

Scan documents to PDF and other file types, as simply as possible.

Visit NAPS2's home page at www.naps2.com. NAPS2 is a document scanning application with a focus on simplicity and ease of use. Scan your documents from WIA- and TWAIN-compatible scanners, organize the pages as you like, and save them as PDF, TIFF, JPEG, PNG, and other file formats. Available on Windows, Mac, and Linux. NAPS2 is currently available in over 40 different languages. Want to see NAPS2 in your preferred language? Help translate! See the wiki for more details.

149 Reviews

Downloads: 598 This Week

Last Update: 2026-01-10
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2

PDFedit

Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit. You can change raw pdf objects (for advanced users) or use many gui functions. Functionality can be easily extended using a scripting language (ECMAScript).

97 Reviews

Downloads: 169 This Week

Last Update: 2020-12-21
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3

PDF Split and Merge

Split and merge PDF files on any platform

Split and merge PDF files with PDFsam, an easy-to-use desktop tool with graphical, command line and web interface.

Downloads: 196 This Week

Last Update: 2026-03-02
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4

PdfInspector1

Application to inspect text and images of pdf books.

With the application you can open and browse pdf books. In addition you will be able to inspect the codes for characters or locate the images. May be an example of basic use of pdfbox. JDK-17 compatibility

1 Review

Downloads: 4 This Week

Last Update: 2026-03-05
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