OpenSign
8.4#1 in e-signature softwareFrom $9.99 a monthFree planWebAPILinuxmacOS
VisitOpenSign vs RabbitSign
RabbitSign
7.0#25 in e-signature software$0.03 one-timeFree planWebAPI
VisitWhat both publish
| Fact | OpenSign | RabbitSign |
|---|---|---|
| API access | Yes | Yes |
| Audit trail | Yes | Yes |
| Bulk sending | Yes | Yes |
| Document templates | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. | RabbitSign says Zapier, Salesforce, and HubSpot integrations are under development. |
| Intended users | The documentation describes the product as designed for individuals and businesses, from startups to large corporations. | RabbitSign says its free HIPAA-compliant e-signing is offered to HIPAA Covered Entities and Business Associates. |
| Product | OpenSign describes itself as an open-source PDF e-signature solution for signing, storing, and securing documents. | RabbitSign provides electronic signature requests for signing documents. |
OpenSign plans
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- EnterprisePriced on request
RabbitSign plans
- Free manual e-signingFree
- Developer API folder creation$0.10, paid once
- Developer API non-folder calls$1, paid once
- Manual e-signingFree
- Batch Send$0.03, paid once
- Developer API$0.10, paid once
Pick OpenSign if…
OpenSign may suit individuals and businesses that need PDF signing, reusable templates, or API-based signing workflows. It also offers self-hosting instructions for those who want to run it on Linux, macOS, or Windows.
Pick RabbitSign if…
RabbitSign suits individuals and organizations needing free manual PDF signing, reusable templates, audit trails, or API workflows. Its HIPAA option is aimed at Covered Entities and Business Associates.