OpenSign vs Supatool
| OpenSign | Supatool | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | $12/mo |
| Open source | No | No |
| Platforms | api | api |
| Free plan | Yes | No |
| Audit trail | Yes | Yes |
| Document templates | Yes | Yes |
| Bulk sending | Yes | Yes |
| API access | Yes | Yes |
| SMS authentication | Yes | — |
| Signature order | both | both |
| Paid from | — | 12 /user/mo |
Both are listed in Best E-Signature Software. On Samsung Mobile US Press, OpenSign scores higher on our published basis.