OpenSign™ | The Free & OpenSource Alternative to Docusign
Discover OpenSign™, the leading open-source DocuSign alternative for secure & reliable PDF document signing. Our platform offers state-of-the-art encryption, a user-friendly interface & robust API support, making it the go-to solution for individuals and businesses seeking an open-source alternative to DocuSign. Experience the freedom to sign, organize & deliver documents, without the hefty price tag. Join the OpenSign™ community today & revolutionize the way you handle digital signatures.
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OpenSign™ is a free and open-source alternative to DocuSign, enabling individuals, businesses, and developers to securely sign PDFs, request signatures from others, and manage documents with professional features.
🚀 Overview
OpenSign is a comprehensive e-signature platform that allows users to upload PDFs, add hand-drawn, typed, or uploaded signatures, create reusable templates, and organize documents in OpenSign Drive. It supports multi-signer workflows, secure sharing via links, email notifications, and full audit trails for compliance.
What problem does this project solve? It eliminates the high costs and vendor lock-in of proprietary services like DocuSign by providing a free, self-hostable solution with enterprise-grade security and features.
Who is it built for? Individuals needing quick signing, businesses handling contracts, and developers integrating e-signing via API.
Why did you build it? To make professional document signing accessible to everyone, regardless of budget, through open-source innovation.
✨ Key Features
- Secure PDF E-Signing with robust encryption, timestamps, IP tracking, and audit trails
- Multi-signer support: sequential workflows, guest signing with email OTP verification
- Signature options: hand-drawn, typed, uploaded images for signatures and initials
- PDF Templates for repeated use and OpenSign™ Drive for storage, organization, sharing
- Customizable email templates, document expiration, rejection reasons, completion certificates
- Optional: API for integrations, Zapier, cloud storage, CRMs; upcoming enterprise features
🛠 Tech Stack
- Frontend: React.js, TypeScript, CSS
- Backend: Node.js
- Database: MongoDB
- Auth: Custom
- Hosting: Docker for self-hosting, cloud-hosted on OpenSign infrastructure
👥 Who Is This For?
This project is useful for:
- Businesses who want affordable, secure e-signing without subscriptions
- Developers who want to integrate e-signing APIs into their apps
- Teams looking for self-hosted document management with audit trails
📸 Screenshots / Demo
- Live demo: https://app.opensignlabs.com/
- GitHub: https://github.com/OpenSignLabs/OpenSign
🔥 Project Status
- 🟢 Actively building
Last updated: 2026-03-16
❓ FAQ
Is this project free?
Freemium / Open Source — Cloud version offers a generous free tier with unlimited signatures (some limits), paid pro plans starting ~$10/month for advanced features. Self-hosting is completely free. (Hosted free plan for basic use; upgrade for teams/high volume.)
Is the source code available?
Yes — link to repository https://github.com/OpenSignLabs/OpenSign
Can I contribute?
Yes — Fork the repo, check open issues/discussions, submit pull requests. Join Discord for collaboration. See CONTRIBUTING.md for guidelines; 38+ contributors already.
📬 Contact & Links
- Website: https://www.opensignlabs.com
- GitHub: https://github.com/OpenSignLabs
- Twitter/X: https://x.com/OpenSignHQ
- Email: hello@opensignlabs.com
Built with ❤️ and kept warm on WarmIndex.
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