Apptainer
6.7#4 in container enginesFree planFree planAPILinuxmacOSSelf-hosted
VisitApptainer vs crun
What both publish
| Fact | Apptainer | crun |
|---|---|---|
| OCI compatibility | Apptainer can import containers from OCI registries and aims for compatibility with Docker containers. | crun conforms to the OCI Container Runtime specifications. |
| Purpose | Apptainer creates and runs containers that package software for portability and reproducibility. | crun is a fast, low-memory-footprint OCI container runtime written in C. |
| Security reporting | The Technical Steering Committee manages project security, and the policy directs vulnerability reports through private contact with the project. | The security policy directs vulnerability reports through GitHub Security Advisories rather than public issues or pull requests. |
| Security response | The Apptainer Technical Steering Committee accepts vulnerability reports at [email protected] and documents vulnerabilities through CVEs. | The project aims to acknowledge security reports within three business days and says confirmed issues are handled according to severity and impact. |
Apptainer plans
- ApptainerFree
crun plans
- crunFree
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 crun if…
crun suits Linux users who need an OCI-compatible runtime for self-hosted container management. It may also suit developers integrating container management into programs, since the project aims to make crun usable as a library.