Cloud · head to head
Longhorn vs Skopeo
Longhorn
Cloud
Open source distributed block storage for Kubernetes, incubating at the CNCF
- From
- Free
- Rated
- -
Skopeo
Cloud
Inspect, copy and sign container images without pulling them
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Longhorn there is no vendor and no SLA, so a production incident at three in the morning is your own problem unless you buy SUSE Rancher Prime support separately.; Skopeo single-purpose: it neither builds nor runs images, so it is one tool in a chain rather than a solution
- They diverge on capability: Longhorn covers Per-volume controllers, Skopeo covers Remote inspection.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Longhorn and Skopeo actually diverge.
Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Cloud).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Longhorn
- Per-volume controllers
- Synchronous replication
- Snapshots and backups
- Volume expansion
- Disaster recovery volumes
- Web interface
Only in Skopeo
- Remote inspection
- Registry-to-registry copy
- Format conversion
- Image signing
What people use each for
The jobs each tool is most often brought in to do.
Longhorn
- An on-premises Kubernetes cluster with local disks and no SAN that needs replicated persistent volumesnot Skopeo
- Edge sites where shipping a storage array is impractical and three nodes is the whole clusternot Skopeo
- A K3s deployment where the storage layer must be light enough to run alongside the workloadsnot Skopeo
- A team that wants snapshots and S3 backups of persistent volumes without paying per-node storage licencesnot Skopeo
Skopeo
- Promoting images between staging and production registries without a round tripnot Longhorn
- Inspecting an image’s contents before deciding to deploy itnot Longhorn
- Mirroring images into an air-gapped or internal registrynot Longhorn
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Longhorn
- There is no vendor and no SLA, so a production incident at three in the morning is your own problem unless you buy SUSE Rancher Prime support separately.
- Synchronous replication across nodes means write latency depends on the slowest replica and the network between nodes, which makes it a poor fit for latency-sensitive databases.
- Every replica is a full copy, so three-way replication consumes three times the raw capacity, unlike erasure-coded systems that are far more space efficient.
- It is designed for block storage on modest clusters and does not scale to the node counts or throughput that Ceph or a commercial array handles, so growth eventually forces a migration.
- Recovery from certain degraded states, such as a volume stuck detaching or replicas failing to rebuild, requires manual intervention and knowledge of Longhorn internals that is not widely held.
Skopeo
- Single-purpose: it neither builds nor runs images, so it is one tool in a chain rather than a solution
- Command syntax with transport prefixes such as docker:// is unusual and trips people up initially
- Documentation is sparse compared with the rest of the container ecosystem
Pricing, plan by plan
Longhorn
Free- LonghornFree
- Apache 2.0 licensed, no licence fee
- Community support via GitHub and Slack only
- No vendor SLA or escalation path
Skopeo
Free- SkopeoFree
- Full functionality
- No usage limits
- Community support
Which should you pick?
Choose Longhorn if
- You need per-volume controllers.
- You want to start without paying.
- You work on Linux, Kubernetes.
- You also want synchronous replication.
Choose Skopeo if
- You need remote inspection.
- You want to start without paying.
- You work on Linux, macOS.
- You also want registry-to-registry copy.
Questions people ask
- Is Longhorn or Skopeo better?
- Neither clearly leads. Longhorn starts at Free and Skopeo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Longhorn or Skopeo?
- Longhorn starts at Free and Skopeo at Free.
- Does Longhorn or Skopeo run on more platforms?
- Longhorn runs on Linux, Kubernetes. Skopeo runs on Linux, macOS.
- Can I use Longhorn for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Longhorn best used for?
- Longhorn is most often used for an on-premises kubernetes cluster with local disks and no san that needs replicated persistent volumes, edge sites where shipping a storage array is impractical and three nodes is the whole cluster, a k3s deployment where the storage layer must be light enough to run alongside the workloads, a team that wants snapshots and s3 backups of persistent volumes without paying per-node storage licences. Of those, an on-premises kubernetes cluster with local disks and no san that needs replicated persistent volumes and edge sites where shipping a storage array is impractical and three nodes is the whole cluster are not what Skopeo is typically brought in for.
- What can Longhorn do that Skopeo cannot?
- Longhorn covers Per-volume controllers, Synchronous replication, Snapshots and backups, Volume expansion. Skopeo covers Remote inspection, Registry-to-registry copy, Format conversion, Image signing.
Answered from the vendors’ own pages
Longhorn: Who do we call when it breaks?
Nobody, unless you buy SUSE Rancher Prime, which includes commercial support for Longhorn. This is the decisive question for production use.
Skopeo: Is Skopeo free?
Yes, open source with no licence fee.
Longhorn: How much capacity does replication cost?
Full copies, so three replicas means three times the raw capacity. Budget accordingly rather than assuming erasure coding efficiency.
Skopeo: Why copy images without pulling them?
A registry-to-registry copy avoids downloading and re-uploading gigabytes, which is faster and much cheaper on bandwidth in CI.
Longhorn: Is it suitable for production databases?
For modest workloads yes, but synchronous replication adds write latency and high-transaction databases usually want something faster.
Skopeo: Can Skopeo run containers?
No. It only inspects, copies, signs and deletes images. Running them is Podman’s or Docker’s job.
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