[The free and open source alternative to DocuSign](https://www.opensignlabs.com)
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## The open-source document e-signing solution
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### Table of Contents
1. [Introduction](#introduction)
2. [Features](#features)
3. [Installation](#installation)
4. [Usage](#usage)
5. [Contribution Guidelines](#contribution-guidelines)
6. [License](#license)
7. [Acknowledgments](#acknowledgments)
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### Introduction
Welcome to OpenSign, the premier open source docusign alternative - document e-signing solution designed to provide a secure, reliable and free alternative to commercial esign platforms like DocuSign, PandaDoc, SignNow, Adobe Sign, Smartwaiver, SignRequest, HelloSign & Zoho sign. Our mission is to democratize the e-signing process, making it accessible and straightforward for everyone.
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### Features
- **Secure PDF E-Signing:** With the help of robust encryption algorithms, OpenSign™ ensures maximum security, privacy & compatibility.
- **Annotate Documents:** OpenSign™ allows you to annotate PDF documents with an advanced signing pad that allows hand drawn signatures, uploaded images, typed signatures & saved signatures for the simplest signing experience ever.
- **User-Friendly Interface:** OpenSign™ was built while keeping Intuitive design in mind for ease of use. Features like "Sign yourself", "Templates", "One click signatures" and "OpenSign™ Drive" makes it stand out of the crowd and even makes it better than a lot of so-called industry leaders.
- **Multi-signer Support:** OpenSign's ability to invite multiple signers for signing along with the ability to invite witnesses & being able to enforce signing in a sequence makes it the only open source solution that is fully loaded and allows it to compete head-to-head with established players in e-signature space.
- **Email Unique Code(OTP) verification support for guest signers:** With OpenSign™, your documents are fully secure even when being signed by guest users. Guest signers can only sign the document after entering a unique code sent to their email address.
- **"Expiring Docs" & "Rejection":** You can set documents to expire after certain number of days after which nobody will be able to sign. Not just this, OpenSign™ also allows signers to reject signing a document.
- **Beautiful email templates:** All document signing invitations, completion notifications & reminders are formatted using great looking email templates.
- **PDF Template Creation:** OpenSign™ allows you to create and store PDF document templates for repeated use thereby saving you a lot of time & collect e-signatures seamlessly.
- **OpenSign™ Drive:** It is a centralised secure vault for your digital documents that makes storing, signing, organizing, sharing & achieving your docs a breeze.
- **Audit Trails & completion certificate:** Being a security focused solution, OpenSign™ makes it a top priority to save detailed logs for tracking document activities along with time-stamps, IP addresses, email IDs & phone numbers. A completion certificate is generated as soon as document is completed which contains all the document related logs for added safety.
- **API Support:** OpenSign™ API allows seamless integration into existing systems and software. You can generate an API key from the app and refer the [docs](https://docs.opensignlabs.com) to start integrating it in your existing applications.
- **Integrations:** Seamless integrations with various Cloud storage systems, CRMs & enterprise platforms is available. We also have a Zapier integration that allows you to integrate it with virtually any application.
