OpenSign🔥 The free & Open Source DocuSign alternative

OpenSign

OpenSign is a free, open-source alternative to DocuSign that enables secure PDF document e-signing without vendor lock-in. It provides a comprehensive solution for businesses and individuals who need reliable, privacy-focused digital signatures with enterprise-grade security features.

Key Features

• Secure PDF E-Signing: Robust encryption algorithms ensure maximum security and privacy for all signed documents
• Multi-Signer Support: Invite multiple signers, enforce sequential signing, and share signing links for flexible workflows
• PDF Templates: Create and reuse document templates to streamline repeated signing processes
• Audit Trails & Certificates: Detailed logging with timestamps, IP addresses, and completion certificates for compliance and verification
• Advanced Annotations: Hand-drawn signatures, uploaded images, typed signatures, and annotation tools for flexible document markup
• API Support: Seamless integration into existing systems with comprehensive API documentation

Use Cases

• Business Contracts: Sign NDAs, employment agreements, and service contracts securely without expensive third-party platforms
• Document Management: Organize, store, and archive signed documents in a centralized secure vault
• Guest Signing: Allow external parties to sign documents with OTP email verification for added security
• Workflow Automation: Integrate with cloud storage, CRMs, and enterprise platforms via API or Zapier

Who Is It For

OpenSign is ideal for businesses, legal teams, and individuals seeking a self-hosted or cloud-based e-signature solution that doesn't compromise on functionality or security. It serves organizations wanting to reduce costs while maintaining control over sensitive documents and signing workflows.