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