Docker Engine vs Shifter
| Docker Engine | Shifter | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | Linux |
| Free plan | Yes | — |
| Rootless mode | Yes | — |
| Image building | Yes | No |
| Kubernetes CRI | Yes | — |
| Windows containers | Yes | — |
| Image format | both | docker |
| Runtime interface | docker | other |
| Supported host OS | Linux, Windows Server | Linux, including SUSE Linux, RHEL/CentOS/Scientific Linux, and Debian/Ubuntu |
Both are listed in Best Container Engines. On The Geeks Club, Docker Engine scores higher on our published basis.