E-Signing.io
7.0#24 in e-signature softwareFrom $19 a monthFree planWebAPI
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| Fact | E-Signing.io | OpenSign |
|---|---|---|
| API access | Yes | Yes |
| Audit trail | Yes | Yes |
| Bulk sending | Yes | Yes |
| Document templates | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The site advertises Zapier connections to over 7,000 apps, plus a REST API and webhooks. | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. |
| Product | The product lets users build contracts and offers in an editor, send them by link or SMS, and collect electronic signatures. | OpenSign describes itself as an open-source PDF e-signature solution for signing, storing, and securing documents. |
It may suit teams handling internal HR paperwork or customer-facing offers and contracts, including agencies, freelancers and real estate businesses. The free tier has a low monthly send allowance, while paid plans offer larger listed quotas.
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.