Apptainer
6.7#4 in container enginesFree planFree planAPILinuxmacOSSelf-hosted
VisitApptainer vs OrbStack
What both publish
| Fact | Apptainer | OrbStack |
|---|---|---|
| Docker compatibility | Apptainer can import containers from OCI registries and aims to support pulling, running, and building most Docker Hub containers without changes. | OrbStack provides a Docker engine, Docker Compose and buildx, and is designed to work with existing Compose files and third-party tools such as Dev Containers. |
| Security model | By default, users retain the same identity inside the container and cannot gain additional host privileges. | OrbStack protects internal services with a firewall, but says shared-kernel machines are not a substitute for a full VM against actively malicious code. |
| Support | Free support resources include Slack, a mailing list, and GitHub, while commercial support and services are offered through CIQ. | Official support is offered through email, discussions, an issue tracker and a Discord community. |
Apptainer plans
- ApptainerFree
OrbStack plans
- FreeFree
- Pro$8 a month
- EnterprisePriced on request
Pick Apptainer if…
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.
Pick OrbStack if…
OrbStack suits macOS users who want local containers, Linux machines, or a lightweight Kubernetes cluster for development. Personal users can use the free plan, while commercial users need a per-user license.