• FreeOpen Source
    • Windows
    • Linux
    • PortableApps.com
    Ghostscript is an interpreter for the PostScript language and for PDF.
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    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    The Xpdf open source project includes a PDF viewer along with a collection of command line tools which perform various functions on PDF files: - xpdf: PDF viewer - pdftotext: converts PDF to text - pdftops: converts PDF to PostScript - pdftoppm: converts PDF pages to netpbm...
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  1. Easy-to-use tabbed style ebook reader, equipped with library shelf, supports popular ebook formats as PDF, EPUB (DRM free), CHM, and MOBI. You can make annotations, insert bookmarks, and do searching freely. What's special with Clearview reader?
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  2. The top AEC PDF app to markup and manage drawings and documents. Ideal for replacing pen and paper, avoid printing documents again by using our intuitive feature set that makes marking up a PDF easy.
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    • Windows
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    Formerly ThinkFree Office. It was rebranded in 2020 and replaced previous Hancom Office.
  3. Wide Angle PDF Converter is a Windows application, which allows users to manage, convert and secure their PDF files, all in one place. All conversions and PDF file management are performed locally, so there is no need to upload sensitive documents to the web.
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  4. eBook Reader Plus is an easy to use, intuitive eBook reader app for all your reading needs. All our books are public domain, meaning that we offer free books to all our users.
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  5. Able2Extract Professional is a secure, reliable, cross-platform PDF solution for all PDF related tasks in your workflow that saves time and increases productivity.
  6. HelpRange lets you easily share documents and analyze their usage. Find out how, when, and who is viewing your documents.
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    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    A modern eBook reader for epub, pdf, mobi, azw3 and txt, supporting Windows, macOS, Linux and Web. 1. Format support: epub, pdf, mobi, azw3, txt, md, djvu, docx, rtf, cbz, cbr, cbt, fb2, html and xml 2. Platform support: Windows , macOS, Linux and Web
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  7. ApowerPDF is a rich-featured PDF editor, creator, reader and converter. It also offers some other stunning features such as managing PDF pages, adding signature, creating forms and protectin PDF files.
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    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    From the official website (https://pympress.xyz): Pympress is a little PDF reader written in Python using Poppler for PDF rendering and GTK+ for the GUI.
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  8. PDFescape is your free, online PDF reader, editor, form filler, & form designer. Without required downloads or installations! Without watermarks! Without required registration!
  9. Work with PDF Documents on the Go With PDF Viewer for iOS and Android, you get annotations, forms, signatures, document editing and sharing, all in one free package.
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  10. PSPDFKit is helping companies and users increase productivity across the globe. With our robust PDF solutions, we ensure developers and end-users have the highest quality tools available to do their best work.