Free, open-source alternatives to Adobe Acrobat Sign

Adobe's e-signature service. 4 apps you can run yourself instead of Adobe Acrobat Sign, sorted by how well they replace it. Each one is open source, so your data stays with you.

  1. DocusealBest match

    Create, fill, and sign digital documents (alternative to DocuSign).

    18.7k starsAGPL-3.0Updated 12 October 2026
  2. Documenso

    Digital document signing platform (alternative to DocuSign).

    15.4k starsAGPL-3.0Updated 13 October 2026
  3. OpenSign

    Document signing software (alternative to DocuSign).

    7.1k starsAGPL-3.0Updated 21 August 2026
  4. Signature PDF

    Sign and manipulate PDFs with collaboration, organization, compression and metadata editing.

    830 starsAGPL-3.0Updated 8 September 2026

Side by side

AppStarsLicenseActivityRuns on
Docuseal18,700AGPL-3.0Docker
Documenso15,401AGPL-3.0Node.js, Docker
OpenSign7,093AGPL-3.0Node.js, Docker
Signature PDF830AGPL-3.0PHP, Debian packages, Docker

Why replace Adobe Acrobat Sign?

Adobe Acrobat Sign works, but your data lives in someone else's account, the price can change at any time, and features can disappear. An open-source app you run yourself is yours: you choose where it runs, who can see the data, and when to update.

Questions

What is the best free alternative to Adobe Acrobat Sign?

Docuseal is the closest open-source replacement for Adobe Acrobat Sign in our list. Documenso and OpenSign are worth a look too, depending on what you need.

Can I self-host an alternative to Adobe Acrobat Sign?

Yes. All 4 apps on this page are open source and can run on your own server, usually with Docker, or on a managed host that installs them for you.