k3s/vendor/github.com/opencontainers/image-spec/implementations.md

OCI Image Implementations

Projects or Companies currently adopting the OCI Image Specification

• projectatomic/skopeo
• Amazon Elastic Container Registry (ECR) (announcement)
• openSUSE/umoci
• cloudfoundry/grootfs (source)
• Mesos plans (design doc)
• Docker
  • docker/docker (docker save/load WIP)
  • docker/distribution (registry PR)
• containerd/containerd
• Containers
  • containers/build
  • containers/image
• coreos/rkt
• box-builder/box
• coolljt0725/docker2oci

(to add your project please open a pull-request)