LibreSign vs OpenSign
LibreSign
libresign.coop
OpenSign
opensignlabs.comSide by side
| Figure | LibreSign | OpenSign |
|---|---|---|
| Price from | — | $9.99/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 5 |
| Spec score · E-Signature Software | 7.8 (#44) | 9.0 (#4) |
| Spec score · E-signature tools | 7.5 (#49) | 8.9 (#10) |
| API | LibreSign provides a REST API for integrating signing processes with other systems. | OpenSign exposes a REST API authenticated with an x-api-token header and provides sandbox, production and EU endpoints. |
| API access | Yes | Yes |
| Audit trail | Yes | Yes |
| Free plan | Yes | Yes |
| Intended users | The maker presents LibreSign for businesses, cooperatives, public-sector organizations, legal teams, and IT professionals. | The documentation describes the product as designed for individuals and businesses, from startups to large corporations. |
| Product | LibreSign is an open source electronic-signature web application developed by the LibreCode cooperative. | OpenSign describes itself as an open-source PDF e-signature solution for signing, storing, and securing documents. |
| Security | LibreSign describes end-to-end document encryption and multi-factor authentication as security features. | The API documentation lists TLS-encrypted transport, audit trails, IP logging, and tamper-evident signed PDFs. |
| Signature order | both | both |
| Support | LibreCode offers technical support for configuration, questions, and problems. | The documentation directs users to contact OpenSign support at [email protected] for assistance. |
Plans
OpenSign
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- FreeFree
- EnterprisePriced on request
In their own words
LibreSign
LibreSign has no write-up on Specifiction yet; its figures are above.
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.