Subnoto
Electronic signatures with confidentiality during signing
Subnoto is an electronic signature platform built around confidential computing, processing documents inside trusted execution environments so they remain encrypted while being signed. It is hosted in France and designed around European privacy rules, addressing the concern that typical e-signature platforms decrypt documents during processing, leaving contents accessible to the vendor.
The platform includes a document editor, templates, bulk send, signature ordering, approvers, expiration and reminders, completion tracking, and a Kanban view. Security features include passkeys, SMS authentication, SSO, roles and permissions, workspaces, and audit logs. Developers can use the REST API, TypeScript, Python, and PHP SDKs, webhooks, embedded signing, an API Sandbox, and an MCP server for AI assistants. Integrations include Zapier, n8n, Carbone.io, Raycast, Slack, Discord, and Google Drive import.
Subnoto serves freelancers, HR, legal, notary, nonprofit, and security-focused teams as well as developers embedding signatures into products. It offers a free plan to start signing, with paid plans adding capabilities such as multiple signable documents per envelope, envelope approvers, and API-sent signature credits on Pro and Ultimate plans.
12 alternatives to Subnoto
Ranked by how well each tool replaces Subnoto: shared features, audience, price and popularity.
Digital signatures and remote online notarization platform
Covers 2 of 15 key features.
63 out of 100 match$9.95/moThe secure, open-source digital signature for your world.
Covers 0 of 15 key features and is open source.
Free planOpen source62 out of 100 matchContact salesOpen-source document signing platform
Covers 1 of 15 key features and is open source.
Free planOpen source62 out of 100 match$20/mo- 61 out of 100 matchContact sales
European platform for signing, verifying, archiving and accelerating digital transactions
Covers 1 of 15 key features.
Free plan61 out of 100 match$9/mo- 61 out of 100 match$9.99/mo
Electronic signature software and API for sending, tracking and embedding signing workflow
Covers 0 of 15 key features.
Free plan61 out of 100 match$5/moAI-powered agreement management with e-signature and workflow automation.
Covers 2 of 15 key features.
61 out of 100 match$11/moSign documents online for free with legally binding electronic signatures.
Covers 2 of 15 key features.
Free plan60 out of 100 match$10/mo- 60 out of 100 match$75/mo
- 60 out of 100 matchFree
- 60 out of 100 match$15/mo