containerd vs SingularityCE
| containerd | SingularityCE | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, self-hosted, Windows | Linux |
| Free plan | Yes | Yes |
| Rootless mode | Yes | Yes |
| Image building | No | Yes |
| Kubernetes CRI | Yes | — |
| Windows containers | Yes | No |
| Image format | both | both |
| Runtime interface | containerd | other |
| Supported host OS | Linux, Windows | linux |
Both are listed in Best Container Engines, Best Container Runtime Software. On Everything Xiaomi, containerd scores higher on our published basis.