OpenSignature Alternatives

    OpenSignature is described as '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' and is an app in the Office & Productivity category. There are more than 10 alternatives to OpenSignature for a variety of platforms, including Online / Web-based, Windows, iPad, iPhone and Mac. The best alternative is Adobe Acrobat DC. It's not free, so if you're looking for a free alternative, you could try DottedSign or PDF Reader. Other great apps like OpenSignature are Adobe Fill & Sign (Free), PDFill (Freemium), LightPDF (Freemium) and DocHub (Freemium).

    This page was last updated Jun 22, 2021

    1. Free Digital Signature Software that works without any file upload to ensure privacy and security Combine, merge and reorganize pages of multiple PDF pages and images into one PDF document without any file upload.
    2. Concord is a contract lifecycle management platform built for the entire organization. Radically simple in design, Concord's end-to-end solution makes it easier to create, collaborate, negotiate, e-sign, store, and manage agreements all on one ecosystem.
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    3. 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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    4. PDF Forms is a powerful processing app for anyone who has to deal with PDF forms and legal documents. With its help you can fill forms, add remarks and notes to the ready document, sign agreements and notices.
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    5. is a website where you fill it out, sign, and send forms, all online!

      • FreemiumProprietary
      • Online
      Convert your PDF to a web form and let your customers fill out the PDF in the browser without any hassle!
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    6. PDF Signer - Mac application to quickly fill and sign any PDF agreement or form. No need to print & scan. Perfect for: Signing agreements and contracts over email Filling any PDF Form (W-9, 1040, etc...
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    7. XolidoSign, the best technology for electronic signature, time stamping and verification of all types of intelligent documents (PDF integrated firm, images, etc..).
    8. Fill and Sign PDF forms containing AcroFields. Save, and share created document. Fill and Sign any PDF form containing AcroFields. Save created document, view it, mail, ect.
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      • FreeProprietary
      • Windows
      • Android
      • iPhone
      • iPad
      UPDF Reader is a free document reader program for opening and viewing unshared PDF and UPDF files created by PDF Unshare product. With UPDF Reader, You can open and view authorized UPDF (.updf) and unshared PDF (.pdf) documents easily on Windows, iOS and Android devices.
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    Showing 20 of 23 alternatives