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DottedSign
LibreSign
Adobe Fill & Sign
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Dropbox Sign
Your ultimate open source PDF e-signature solution.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | opensignlabs.com | justdocz.com |
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| Platforms | — | |
| Company | Startup from the United States · 10 - 19 employees · 2023 | Startup from India · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


We are excited to introduce the OpenSign™ – a game-changing open source project that promises to transform the way individuals and businesses secure their digital transactions. OpenSign was born out of a very simple vision – to create a digital signature tool that everyone can trust and use for...
JustDocz is private document search software for Windows designed for professionals and organizations that work with large collections of documents. Instead of relying only on filenames and folder structures, JustDocz indexes the content inside PDFs, Microsoft Office documents, scanned PDFs,...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
OpenSign bulk send feature
More videos
JustDocz - Find what's inside your files
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing OpenSign and JustDocz.
OpenSign's answer
🔐 Unparalleled Security: OpenSign employs state-of-the-art encryption and secure storage techniques to protect your sensitive information. We prioritize data privacy and security, ensuring your documents are safe from unauthorized access.
⚙️ Flexible Hosting Options: OpenSign offers both self-hosting and cloud hosting options, providing you with the flexibility to choose the setup that best fits your organization’s needs. This adaptability allows you to have complete control over your document management environment.
📥 User-Centric Design: Our platform is designed with the user in mind, featuring an intuitive interface that makes managing documents simple and efficient. Tasks like downloading, renaming, moving, and deleting files are made easy, even for those who aren’t tech-savvy.
⚡ Efficiency and Speed: OpenSign streamlines document management processes, saving you time and effort. Our efficient system ensures quick access and manipulation of files, boosting overall productivity.
📊 Comprehensive Feature Set: From basic document management tasks to advanced features like digital signatures and automated workflows, OpenSign covers all your needs. This all-in-one approach eliminates the need for multiple tools and platforms.
🔄 Continuous Innovation: We are committed to continuous improvement and regularly update our platform with new features and enhancements. Our proactive approach ensures that OpenSign evolves to meet the ever-changing demands of the digital world.
👥 Community and Support: Join a community of users who share best practices and tips. Our dedicated support team is always ready to assist you, ensuring you get the most out of OpenSign.
JustDocz's answer:
JustDocz combines local document search, OCR, multilingual search, and optional local AI in a privacy-first Windows desktop application. Instead of relying only on filenames, JustDocz indexes the contents of PDFs, Office documents, scanned PDFs, images, spreadsheets, presentations, and other local files so users can search by what they remember from inside a document. A key difference is its local-first design. Documents do not need to be uploaded to a cloud search service simply to become searchable. This makes JustDocz especially useful for professionals working with confidential or sensitive information. It is also designed for real-world document archives containing a mix of file formats, scans, older documents, multilingual content, spelling variations, and files accumulated over many years.
OpenSign's answer
Security: Advanced protection for your documents. Flexibility: Self-hosting and cloud hosting options. Accessibility: Anywhere, anytime document access. Usability: Intuitive and user-friendly interface. Performance: Efficient and fast document management. Feature-Rich: Comprehensive tools in one platform. Innovation: Continuous updates and improvements. Support: Community and dedicated customer support. Affordability: Competitive pricing with great value.
JustDocz's answer:
JustDocz is a strong choice for users who want to search large local document collections without moving their files into a cloud platform. It focuses on a practical problem: users often remember something written inside a document, but do not remember the filename or folder. JustDocz helps solve that by searching document content rather than relying only on filenames. Compared with basic file-search tools, JustDocz adds full-text document indexing, OCR for scanned files and images, multilingual search, typo-tolerant and phonetic search, and optional local AI capabilities. Compared with cloud-first document search services, JustDocz is designed around local processing, which can be important for law firms, researchers, media organizations, accountants, consultants, and businesses handling confidential files. No account or signup is required to get started.
OpenSign's answer
Primary Technologies Used in OpenSign Backend Development:
Node.js: For server-side logic and handling asynchronous operations efficiently. Express.js: A lightweight framework for building web applications and APIs. MongoDB: A NoSQL database for scalable and flexible data storage. Redis: For caching and improving the performance of the application.
Frontend Development:
React.js: For building a dynamic and responsive user interface. Redux: For state management, ensuring a consistent application state across components. Bootstrap: For responsive design and quick UI development. Authentication and Security:
OAuth 2.0: For secure and standardized authentication. JWT (JSON Web Tokens): For secure token-based authentication and authorization. BCrypt: For password hashing and securing user credentials. File Handling and Storage:
AWS S3: For scalable and secure cloud storage of documents. File System (FS): For local storage and file handling in self-hosted environments.
Deployment and DevOps:
Docker: For containerizing applications, ensuring consistency across different environments. Kubernetes: For orchestrating containerized applications, ensuring scalability and reliability. CI/CD Tools: Tools like Jenkins, GitHub Actions, or GitLab CI for continuous integration and deployment. Monitoring and Analytics:
JustDocz's answer:
JustDocz is built as a local desktop application using a modern desktop and document-processing stack. Primary technologies include: - Tauri for the desktop application - TypeScript and JavaScript - SQLite for local data storage and indexing - Full-text and local search technologies - OCR technologies including Tesseract - Local document parsing and extraction tools - PDF and Office document processing libraries - Optional local AI integration through Ollama and supported local language models The architecture is designed around local processing so document indexing, OCR, search, and optional AI workflows can run on the user's computer
JustDocz's answer:
JustDocz is designed for professionals, businesses, and organizations that work with large collections of documents and need to find information inside them quickly. Typical users include: - Lawyers, advocates, law firms, and legal departments - Researchers and academic users - Media organizations, publishers, and journalists - Accountants, finance professionals, and auditors - Consultants and professional services firms - Small and medium businesses - Educational institutions and libraries - Knowledge workers with large document archives - Privacy-conscious users who prefer local document processing It is particularly useful for people working with PDFs, Office documents, scanned records, images, reports, contracts, invoices, spreadsheets, and multilingual archives.
JustDocz's answer:
JustDocz was inspired by a real problem: finding information across years of accumulated professional documents. The idea came from seeing how difficult it had become to locate information across legal files collected over many years. Often, someone might remember a client name, court, type of case, location, or phrase from inside a document, but not the filename or folder where it was stored. The problem became even more difficult as documents increasingly arrived as scanned PDFs, images, email attachments, Office files, and other formats. Privacy was equally important. Legal and other professional documents can contain confidential information, so uploading entire document collections to external cloud services is not always appropriate. JustDocz was built to make these existing local document collections searchable while keeping document processing on the user's own computer.
JustDocz's answer:
JustDocz is newly launched, and we are currently onboarding early users and organizations.
Share your experience with using OpenSign and JustDocz. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Great product! very user-friendly with excellent plans and pricing. Everyone should try it- it’s free!
OpenSign is the best alternative to docusign, in terms of Pricing, User friendly ui, Open source, and Most of the essential features the offering in free plan
Whenever I'm stuck on a problem, I usually end up Googling a lot, reading research papers and downloading anything that seems useful. And of course, everything goes straight into my Downloads folder. I never really...
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