OpenSign
8.4#1 in e-signature softwareFrom $9.99 a monthFree planWebAPILinuxmacOS
VisitOpenSign vs PearSign
What both publish
| Fact | OpenSign | PearSign |
|---|---|---|
| API | OpenSign exposes a REST API authenticated with an x-api-token header and provides sandbox, production and EU endpoints. | PearSign offers a REST API with bearer-token authentication, API keys, and webhooks; its docs say test keys are currently disabled while an isolated sandbox is being built. |
| Audit trail | Yes | Its completion records include event timestamps, signer name and email, IP address, device information, authentication method, and a document SHA-256 hash. |
| Integrations | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. | The site lists native integrations with Google Drive, Dropbox, Salesforce, Twilio, and Postmark, with other connections available through its API and webhooks. |
| Product | OpenSign describes itself as an open-source PDF e-signature solution for signing, storing, and securing documents. | PearSign is a document-signing platform for drafting, sending, signing, and managing contracts with electronic signatures. |
OpenSign plans
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- EnterprisePriced on request
PearSign plans
- FreeFree
- Starter$15 a month
- Professional$39 a month
- Business$129 a month
- Enterprise$399 a month
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 PearSign if…
PearSign suits individuals and teams that draft and send contracts for electronic signatures. Its guided forms may also fit businesses that collect validated answers and files from clients or other signers.