OpenSign
8.4#1 in e-signature softwareFrom $9.99 a monthFree planWebAPILinuxmacOS
VisitOpenSign vs Signaturely
Signaturely
7.6#15 in e-signature softwareFrom $240 a yearFree planAndroidiOSWebAPI
VisitWhat both publish
| Fact | OpenSign | Signaturely |
|---|---|---|
| API | OpenSign exposes a REST API authenticated with an x-api-token header and provides sandbox, production and EU endpoints. | The API supports automated signature requests and templates, and its pricing is separate from regular Signaturely plans. |
| API access | Yes | Yes |
| Audit trail | Yes | Yes |
| Bulk sending | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. | The regular plans list Google Drive, Dropbox, OneDrive and Box integrations, and the API page says Zapier is also available. |
OpenSign plans
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- EnterprisePriced on request
Signaturely plans
- FreeFree
- Personal$25 a month
- Personal Annual$240 a year
- Business$50 a month
- Business Annual$480 a year
- Free accountFree
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 Signaturely if…
Signaturely suits businesses sending paperwork to clients or employees, including teams that need templates, reminders, audit history, and sequential signing. Its API tiers target small businesses, companies, and enterprises needing automated signature requests or embedded signing.