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Singularity Container Services
What Singularity Container Services is
Singularity Container Services (SCS) is Sylabs’ hosted container service, offered as a free version of Singularity Enterprise. Its SCS Library lets users push containers to the cloud for others to retrieve, verify, and use. Teams can share and discover SIF images in the Container Library and set access with role-based controls. A secure Remote Builder builds containers on systems where users do not have root privileges, while the Keystore uses cryptographic keys to sign and verify containers.
SCS supports SIF and OCI image files. Users can push library images with the singularity push command, and access its OCI registry using tools such as Skopeo and Docker. Sign-in options include Google, GitHub, GitLab, and Microsoft. Sylabs says its cloud services use TLS, signed and encrypted authentication tokens, and authentication between services. The service is listed for API, Linux, and web, and is intended for researchers, scientists, engineers, and developers, including people working in performance-intensive compute environments. The free plan allows one project, 500 build minutes per rolling 30 days, 11GB of library storage, x86 only, and Cloud OAuth. Sylabs has announced that SCS will cease operating on October 22, 2026, and stored data will be deleted.
Who it suits
SCS suits researchers, scientists, engineers, and developers who need to build and share containers, including in performance-intensive compute environments. Its hosted builder is useful when a system does not provide root privileges, while the library and signing tools support container sharing and verification.
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.
Limits
The free plan includes one project, 500 build minutes per rolling 30 days, and 11GB of library storage. It is limited to x86 and Cloud OAuth. SCS is scheduled to cease operating on October 22, 2026, when its services will stop and stored data will be deleted.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Singularity Container Services | Free · one project · 500 build minutes per rolling 30 days · 11GB library storage · x86 only · Cloud OAuth | Free |
As cloud.sylabs.io lists them, read 11 Oct 2026. The maker's own page has the final word.
Getting started
- Visit cloud.sylabs.io.
- Sign in with Google, GitHub, GitLab, or Microsoft.
- Use the free plan, which includes one project.
- Build with the Remote Builder or push containers to the library.
Verdict
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.
Questions
Is Singularity Container Services free?
Yes. Its listed plan costs nothing and includes one project, 500 build minutes per rolling 30 days, and 11GB of storage.
Which container formats does it support?
SCS supports SIF and OCI image files.
How can users sign in?
The listed sign-in options are Google, GitHub, GitLab, and Microsoft.
Which platforms are listed?
The service is listed for API, Linux, and web.
When will SCS stop operating?
Sylabs has announced discontinuation on October 22, 2026. The service and cloud.sylabs.io will cease to operate, and stored data will be deleted.
Facts from Singularity Container Services's own pages
- Account sign-in
- The user guide lists Google, GitHub, GitLab, and Microsoft as sign-in options for SCS. · docs.sylabs.io, 11 Oct 2026
- Headquarters
- Reno, Nevada, United States · cloud.sylabs.io, 28 Sept 2026
- Image formats
- The Enterprise feature comparison lists support for both SIF and OCI image files for SCS. · sylabs.io, 11 Oct 2026
- Integrations
- The SingularityCE user guide documents pushing SCS library images using the singularity push command and accessing its OCI registry with tools such as Skopeo and Docker. · docs.sylabs.io, 11 Oct 2026
- Library
- The Container Library lets teams share and discover SIF images and control access with role-based access controls. · sylabs.io, 11 Oct 2026
- Remote builds
- SCS provides a secure Remote Builder for building containers on systems where users lack root privileges. · docs.sylabs.io, 11 Oct 2026
- Security
- The Sylabs Cloud security documentation says its services use TLS, signed and encrypted authentication tokens, and authenticate requests between services. · docs.sylabs.io, 11 Oct 2026
- Service
- Singularity Container Services is Sylabs’ free hosted version of Singularity Enterprise. · sylabs.io, 11 Oct 2026
- Service discontinuation
- The SCS EULA announces discontinuation of Singularity Container Services on October 22, 2026, after which cloud.sylabs.io and its services will cease to operate and stored data will be deleted. · cloud.sylabs.io, 11 Oct 2026
- Signing
- The Keystore uses cryptographic keys to sign and verify containers for authenticity and integrity. · sylabs.io, 11 Oct 2026
- Support
- Sylabs lists email support for customers and directs general inquiries to its sales team. · sylabs.io, 11 Oct 2026
- What it does
- The SCS Library lets users push containers to the cloud so others can pull, verify, and use them. · docs.sylabs.io, 11 Oct 2026
- Who it serves
- Sylabs describes its container runtime technology as serving researchers, scientists, engineers, and developers, including performance-intensive compute environments. · sylabs.io, 11 Oct 2026
Where Singularity Container Services stands on Freedom251
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