emSigner API vs OpenSign
| emSigner API | OpenSign | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | Yes | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Android, api, iOS, self-hosted, Web | api |
| Free plan | No | Yes |
| Embedded signing | Yes | — |
| Identity verification | Yes | — |
| Workflow status API | Yes | — |
| Webhook event types | 4 | — |
| Signed-file retrieval | Yes | — |
| Sandbox environment | Yes | — |
Both are listed in Best Digital Signature API Software. On Inferse, OpenSign scores higher on our published basis.