What is OpenSign used for?

OpenSign is an open-source electronic signature platform for signing PDF documents, presented as an alternative to DocuSign. It is a good fit for small businesses sending contracts for signature and individuals signing PDFs without a paid subscription.

Is OpenSign open source?

Yes. OpenSign is open source under a custom licence. Its source code is on GitHub at OpenSignLabs/OpenSign and is written mainly in JavaScript.

Yes. OpenSign is open source, so the software itself is free to use under the terms of its own licence. A managed cloud version is also available.

Can I self-host OpenSign?

Yes. OpenSign can be self-hosted on your own server or infrastructure.

What is OpenSign an alternative to?

OpenSign is an open-source alternative to DocuSign, Dropbox Sign, Adobe Acrobat Sign and SignNow. Other open-source alternatives to DocuSign include Documenso and DocuSeal.

Is OpenSign actively maintained?

Yes. The most recent commit to OpenSign was on 21 August 2026, and the latest release is v2.41.3, published on 21 August 2026. The project has 7k stars on GitHub.

OpenSign: open-source alternative to DocuSign, Dropbox Sign

About OpenSign

OpenSign is an open-source document e-signing platform presented as an alternative to commercial services such as DocuSign. Its README also names PandaDoc, SignNow, Adobe Sign, Smartwaiver, SignRequest, HelloSign and Zoho Sign as products it aims to replace. The project's mission is to make document signing accessible and straightforward for everyone.

Users sign PDF documents with a signing pad that supports hand-drawn signatures, uploaded images, typed signatures and saved signatures, and documents can be annotated. The interface offers options such as signing yourself, templates, one-click signatures and a drive for stored files. A cloud-hosted free version exists, and the code can also be self-hosted.

The stack is JavaScript with React, Node.js and MongoDB. The project provides help docs, an API reference, a blog and a Discord community. Because it handles legal documents, buyers should review its licensing terms in the repository, since the license field is not a standard identifier. It suits individuals and small businesses that sign contracts or forms regularly.

Key features

PDF e-signing with a signing pad
Drawn, typed, uploaded and saved signatures
Document annotation
Reusable templates
Sign-yourself and one-click signatures
Cloud-hosted free version and self-hosting

Good fit for

→Small businesses sending contracts for signature
→Individuals signing PDFs without a paid subscription

Built with: JavaScript; MongoDB; Node.js
Tags: e-signature; docusign-alternative; pdf-signing; digital-signature; document-signing; self-hosted; react; mongodb

OpenSign: questions and answers

What is OpenSign used for?: OpenSign is an open-source electronic signature platform for signing PDF documents, presented as an alternative to DocuSign. It is a good fit for small businesses sending contracts for signature and individuals signing PDFs without a paid subscription.
Is OpenSign open source?: Yes. OpenSign is open source under a custom licence. Its source code is on GitHub at OpenSignLabs/OpenSign and is written mainly in JavaScript.
Is OpenSign free?: Yes. OpenSign is open source, so the software itself is free to use under the terms of its own licence. A managed cloud version is also available.
Can I self-host OpenSign?: Yes. OpenSign can be self-hosted on your own server or infrastructure.
What is OpenSign an alternative to?: OpenSign is an open-source alternative to DocuSign, Dropbox Sign, Adobe Acrobat Sign and SignNow. Other open-source alternatives to DocuSign include Documenso and DocuSeal.
Is OpenSign actively maintained?: Yes. The most recent commit to OpenSign was on 21 August 2026, and the latest release is v2.41.3, published on 21 August 2026. The project has 7k stars on GitHub.