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Open Source PDF Signer Alternatives

The best open source alternative to PDF Signer is LibreOffice - Writer. If that doesn't suit you, our users have ranked more than 25 alternatives to PDF Signer and seven of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to PDF Signer are PDFedit, JSignPdf, FormulatePro and PortableSigner.

PDF Signer alternatives are mainly PDF Editors but may also be E-signature Tools or PDF Readers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of PDF Signer.
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  • Mac

PDF Signer - Mac application to quickly fill and sign any PDF agreement or form. No need to print & scan.

Learn more about PDF Signer

  1. Writer has all the features you need from a modern, full-featured word processing or desktop publishing tool.

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  2. PDFedit icon

    PDFedit

    • FreeOpen Source
    • Windows
    • Linux

    Free (and open source) editor for manipulating PDF documents. GUI version + commandline interface. Scripting is used to a great extent in editor and almost anything can be scripted, it is possible to create own scripts or plugins.

    Discontinued

    The project is no longer developed. Last version, 20140526_1531, released in May 2014, can be still downloaded from SourceForge.

    Screenshot


  3. JSignPdf icon

    JSignPdf

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • LibreOffice
    • Apache OpenOffice

    JSignPdf is a Java application which adds digital signatures to PDF documents. It can be used as a standalone application or as an Add-On in OpenOffice.org. The application uses the jsignpdf-itxt library for PDF manipulations (based on iText library in version 2.1.

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  4. FormulatePro icon

    FormulatePro

    • FreeOpen Source
    • Mac

    FormulatePro helps you open and write on PDF documents. You can fill out any PDF form document, drop in graphics, scribble with the mouse or a tablet, save and print.

    Discontinued

    The project is no longer developed. Last version, 0.0.6, released in October 2009, can be still downloaded from GitHub.

    Screenshot
  5. PortableSigner icon

    PortableSigner

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    PortableSigner is a signing (with X.509 certificates) program for PDF files. It's platform independent and runs (tested) under Windows (2000, XP, ...), Linux, and macOS.

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  6. LibreSign icon

    LibreSign

    • FreeOpen Source
    • Online
    • Self-Hosted
    • Nextcloud
    • JavaScript
    • Software as a Service (SaaS)
    • PHP

    LibreSign is a web application for electronic signatures (e-Sign) developed by the LibreCode cooperative (Brazilian cooperative specialized in free software development).

    Screenshot
  7. OpenSignature

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    OpenSignature is an open source project for the digital signature of documents. It works with all cards supported by OpenSC and focuses on adding support for cards from accredited Italian CAs.

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Showing 7 of 7 alternatives