Let's Encrypt vs Smallstep ZTNA
| Let's Encrypt | Smallstep ZTNA | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Linux, self-hosted, Web, Windows | iOS, Linux, macOS, self-hosted, Windows |
| Free plan | Yes | — |
| Automatic renewal | Yes | Yes |
| Deployment automation | Yes | Yes |
| Revocation workflows | Yes | Yes |
| CA integrations | — | Yes |
Both are listed in Best Certificate Management Software, Best Public Key Infrastructure Software. On Everything Xiaomi, Smallstep ZTNA scores higher on our published basis.