Apptainer
6.7#4 in container enginesFree planFree planAPILinuxmacOSSelf-hosted
VisitApptainer vs SingularityCE
SingularityCE
5.9#18 in container enginesFree planFree planLinuxSelf-hosted
VisitWhat both publish
| Fact | Apptainer | SingularityCE |
|---|---|---|
| Purpose | Apptainer creates and runs containers that package software for portability and reproducibility. | SingularityCE creates and runs portable, reproducible containers that package software into a single file. |
| Security model | By default, users retain the same identity inside the container and cannot gain additional host privileges. | By default, the user inside a container remains the same user as outside and cannot gain additional privilege on the host. |
Apptainer plans
- ApptainerFree
SingularityCE plans
- SingularityCEFree
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 SingularityCE if…
SingularityCE suits Linux users packaging software for HPC clusters, academic computing, or other listed environments. It may also fit users who need container compatibility with Docker or OCI formats and can rely on community support.