Subnoto
Electronic signatures rebuilt for modern security
Subnoto launched on December 9, 2025 with 20 votes, #581 of 11,628 launches that month and more than 90% of that year's launches.
What it does
Subnoto is the only e-signature platform where your documents stay encrypted during server-side processing—not just in transit. Using confidential computing, we provide cryptographic proof that your contracts remain private and isolated, even from our own servers. No trust required. Perfect for individuals and organizations handling sensitive data who refuse to choose between convenience and privacy. GDPR & eIDAS compliant by design. Try it free: 10 signatures/month, no credit card needed.
Subnoto is the only platform that keeps contracts confidential during signing, with cryptographic proof. Made in France.
The advantages of e-signatures, without the risks. Only Subnoto keeps documents confidential even during signing. No one can access your data: not Subnoto, not third parties, and not even governments. You stay in control of your data. Whether you're using our web app, SDKs, MCP server or API, integrate Subnoto into your workflow in hours, not weeks. No passwords to forget (passkeys). No data exposed during processing (confidential computing). No clunky interfaces (modern UX). Our intuitive interface, secure collaboration features, and API are all designed to help you complete agreements faster. Send and sign documents quickly. Browse and search confidential workspaces that only designated…from subnoto.com
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Let's Seal – Let's Encrypt for document signing, free and self-hostedJul 2026 · github.com · ▲94TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…

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