Esup-Signature vs OpenSign
Esup-Signature
esup-portail.org
OpenSign
opensignlabs.comSide by side
| Figure | Esup-Signature | OpenSign |
|---|---|---|
| Price from | Free | $9.99/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 5 |
| Spec score · E-Signature Software | 8.8 (#8) | 9.0 (#4) |
| Spec score · E-signature tools | 8.3 (#28) | 8.9 (#10) |
| API access | Yes | Yes |
| Audit trail | Yes | Yes |
| Bulk sending | Yes | Yes |
| Document templates | Yes | Yes |
| Integrations | Documents can be integrated manually, retrieved from a folder, or injected through a web service; document stores such as Nuxeo and Alfresco can connect through CMIS. | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. |
| Intended users | The documentation identifies internal agents, staff, and students, as well as external partners, citizens, and consultants, as users. | The documentation describes the product as designed for individuals and businesses, from startups to large corporations. |
| Security | For hardware-backed signing, Esup-DSS-Client can use a certificate stored on a physical key so the certificate does not leave that key. | The API documentation lists TLS-encrypted transport, audit trails, IP logging, and tamper-evident signed PDFs. |
| Signature order | both | both |
| SMS authentication | Yes | Yes |
| Support | The consortium says its minimum project support includes identifying project actors and applying necessary security patches and fixes for defects that prevent normal operation. | The documentation directs users to contact OpenSign support at [email protected] for assistance. |
| Workflows | Workflows can define signers, signature types, and whether every signer at a step must sign. | The API supports self-signing, public template links, drafts, signer roles, and real-time webhook notifications. |
Plans
OpenSign
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- FreeFree
- EnterprisePriced on request
In their own words
Esup-Signature
Esup-Signature is free, open-source software for building document-signing workflows, sending documents to sign, and tracking completion with proof. Workflows can set signers, signature types, and whether everyone at a step must sign. Supported operations include verification and visa, as well as simple, advanced, and qualified electronic signatures. When a workflow mixes signature levels, simple signatures must precede advanced or qualified ones. Any document format can be signed, but only PDFs show a visual signature; other formats use XAdES signatures. The software can check document integrity and display proof files, and it uses the European Commission’s DSS solution for eIDAS signatures and certificate-based verification. PDF forms can become web forms and draw prefilled data from institutional LDAP or custom sources. Users can delegate signing or data entry and transfer requests. Esup-Signature is free at free under the Apache 2.0 license. It is not offered as a hosted service and must be installed on an institution’s own server.
OpenSign
OpenSign is an open-source PDF e-signature solution for signing, storing, and securing documents. Users can create reusable templates with pre-placed widgets and send them through the API to one or many signers. API workflows include self-signing, drafts, signer roles, public template links, and real-time webhook notifications. Templates can be embedded in React, Next.js, HTML, JavaScript, and Angular projects. The documentation lists TLS-encrypted transport, audit trails, IP logging, and tamper-evident signed PDFs; account protection includes two-factor authentication and passkey sign-in. The free plan costs nothing and lists unlimited digital signatures and templates, completion certificates, sequential signing, OpenSign Drive, and email notifications. Its free-plan guide limits invitation emails to 15 per month; bulk sending and public links require a paid plan. Live API tokens require Professional or Teams, though sandbox tokens are available on all plans. OpenSign provides Docker self-hosting instructions for Linux, macOS, and Windows. Some SMTP features are limited to paid plans.