OpenSign vs Signable API
| OpenSign | Signable API | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api | Web |
| Free plan | Yes | No |
| Embedded signing | — | Yes |
| Workflow status API | — | Yes |
| Signed-file retrieval | — | Yes |
| Sandbox environment | — | Yes |
Both are listed in Best Digital Signature API Software. On Samsung Mobile US Press, OpenSign scores higher on our published basis.