* [CRI-O v1.37.0](https://github.com/cri-o/cri-o) – OCI-based implementation facilitating integration between container runtimes and the Kubelet.

* [Container Runtime Interface (CRI) v0.38.0-alpha.1](https://github.com/kubernetes/cri-api) – Protocol buffers and gRPC definitions enabling kubelet to communicate with various container runtimes.