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Satama Container Registry vs Singularity Container Services

Both stand on container registries. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Satama Container Registry

Free plan APILinuxWeb

Satama combines image storage and organization with access controls, signing and scanning tools. Free use depends on eligibility, and additional resources may require an application.

Visit Satama Container Registry

Singularity Container Services

Free plan APILinuxWeb

SCS may suit users who need hosted container building, sharing, and verification at no charge within its plan limits. Look elsewhere for a service beyond October 22, 2026, since SCS is scheduled to shut down and stored data will be deleted.

Visit Singularity Container Services

The facts

Satama Container RegistrySingularity Container Services
Free planYesYes
Open sourceNot publishedNot published
Runs onAPI, Linux, WebAPI, Linux, Web
Lowest paid planFree or on requestFree or on request
Plans published11
MakerNot publishedNot published
Websiteresearch.csc.ficloud.sylabs.io
On container registries#20 of 60#24 of 60

Satama Container Registry: what it does well

  • Central registry for pushing, pulling and organizing images.
  • Role-based access control and image signing are supported.
  • Includes vulnerability scanning and SBOM tools.
  • Web interface displays container-image information.
  • Rahti is listed as an interoperable service.

What to know first

  • Free use is limited by CSC’s eligibility policy.
  • Pushing and pulling requires a compatible OCI client.
  • CSC recommends Linux knowledge.
  • Users are responsible for image security.

Singularity Container Services: what it does well

  • Free hosted container service with SIF and OCI support.
  • Remote Builder works on systems without root privileges.
  • Role-based access controls manage Container Library sharing.
  • Keystore signs and verifies containers with cryptographic keys.
  • Supports sign-in through Google, GitHub, GitLab, or Microsoft.

What to know first

  • Free plan allows one project and 500 build minutes per rolling 30 days.
  • Library storage is capped at 11GB on the free plan.
  • Free plan is x86 only.
  • Service is scheduled to cease operating on October 22, 2026.

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