Apptainer
6.7#4 in container enginesFree planFree planAPILinuxmacOSSelf-hosted
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| Fact | Apptainer | Mirantis Container Runtime |
|---|---|---|
| Docker compatibility | Apptainer can import containers from OCI registries and aims to support pulling, running, and building most Docker Hub containers without changes. | MCR is compatible with Docker-based workflows, including familiar CLI, Dockerfiles, and APIs. |
| Purpose | Apptainer creates and runs containers that package software for portability and reproducibility. | MCR is an enterprise container engine for running business-critical applications with a supported runtime. |
| Support | Free support resources include Slack, a mailing list, and GitHub, while commercial support and services are offered through CIQ. | MCR subscriptions provide prioritized support, with service levels depending on subscription and the cloud or cluster designated in a support case. |
It suits users running complex applications on shared HPC clusters, including researchers and teams in academia or industry. It also fits people who need portable containers and host resource access without default privilege escalation.
MCR suits organizations running containerized applications on supported Linux or Windows Server hosts. It is aimed at teams needing Kubernetes or Swarm choices, Docker compatibility, and supported security features.