How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on Digital Transaction Management Software5.1#45 of 58

Pricing
- FreeFree forever · 50 sent documents / month · 1 team memberFree
- Probilled monthly · 500 sent documents / month · Up to 5 team members$19/mo
- ScaleUsage-based, no subscription · Everything in Pro · Unlimited team members · Audit-log export · Priority support$0.12/mo
- EnterpriseTrusted / qualified signing certificate · SSO / SAML and SCIM provisioning · SLA and dedicated support · On-prem and compliance assistanceOn request
- Self-hostFree, unlimited · AGPL-3.0 licensed · Run on your own infrastructure · Unlimited documentsFree
As penpact.dev lists them, checked 26 Sept 2026.