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Signature PDFDocumenso
Free

Free and open source under the AGPL-3.0 licence, with free public instances.

 Freemium

The open-source software is free to self-host. Hosted plans are paid.

Web, Self-hosted Web, Self-hosted
  • Multi-person signing mode
  • Page organising, metadata editing and compression in one tool
  • Self-hostable with templates, webhooks and an API
  • Clean modern interface compared with older open-source alternatives
  • Multi-signature mode stores PDFs on the server
  • Signatures are visual, not certificate-based
  • Legal validity depends on jurisdiction and how it is configured
  • Hosted plans and some features are paid
Web application, Self-hosted Self-hosted, Web application
Open source Open source
License: AGPL-3.0 License not stated
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.