# OpenSign — Free Self-Hosted Document Signing Platform

> Open-source DocuSign alternative for sending, signing, and managing legally binding digital documents.

## Install

Save as a script file and run:

# OpenSign — Free Self-Hosted Document Signing Platform

## Quick Use
```bash
git clone https://github.com/OpenSignLabs/OpenSign
cd OpenSign
cp .env.example .env
docker compose up -d
```

## Introduction
OpenSign is an open-source electronic signature platform that provides a self-hosted alternative to DocuSign and Adobe Sign. It enables individuals and businesses to send documents for signature, track signing status, and maintain a secure audit trail without paying per-signature fees.

## What OpenSign Does
- Sends PDF documents to one or multiple signers via email
- Captures legally binding electronic signatures with audit trails
- Supports signature fields, initials, dates, and text input placeholders
- Tracks document status in real time with completion notifications
- Stores signed documents with tamper-evident certificates

## Architecture Overview
OpenSign is built with React on the frontend and Node.js on the backend, using MongoDB for document metadata and user management. PDF rendering and field placement happen client-side, while the backend handles email delivery, signing tokens, and audit log generation. The stack runs as multiple Docker containers orchestrated via Docker Compose.

## Self-Hosting & Configuration
- Deploy using Docker Compose with the provided configuration
- Configure SMTP credentials for sending signature request emails
- Set up MongoDB for document and user storage
- Mount persistent volumes for uploaded and signed PDF files
- Customize branding with your organization logo and colors

## Key Features
- Unlimited signatures with no per-document fees
- Multi-signer workflows with sequential or parallel signing
- Drag-and-drop field placement on PDF documents
- Completion certificates with timestamp and IP audit trails
- REST API for integrating signing into custom applications

## Comparison with Similar Tools
- **DocuSign** — proprietary with per-envelope pricing; OpenSign is free and self-hosted
- **DocuSeal** — similar open-source e-sign; OpenSign uses MongoDB while DocuSeal uses PostgreSQL
- **Documenso** — open-source signing with a SaaS option; OpenSign is fully self-hosted
- **SignRequest** — cloud-based signing service; OpenSign keeps all documents on your infrastructure

## FAQ
**Q: Are OpenSign signatures legally binding?**
A: Yes, electronic signatures created with OpenSign comply with eIDAS and ESIGN Act requirements for standard electronic signatures.

**Q: Can I use OpenSign without Docker?**
A: Yes, you can run the Node.js backend and React frontend directly, though Docker is the recommended deployment method.

**Q: Does OpenSign support templates?**
A: Yes, you can create reusable document templates with pre-placed signature fields.

**Q: How are signed documents secured?**
A: Each signed document includes a completion certificate with cryptographic hashes, timestamps, and signer IP addresses.

## Sources
- https://github.com/OpenSignLabs/OpenSign
- https://opensignlabs.com

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Source: https://tokrepo.com/en/workflows/asset-9dbb38c3
Author: Script Depot