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Cloud · head to head

Longhorn vs ProtonVPN

Longhorn logo

Longhorn

Cloud

Open source distributed block storage for Kubernetes, incubating at the CNCF

From
Free
Rated
-
Full reviewWebsite
ProtonVPN logo

ProtonVPN

Cybersecurity

High-speed Swiss VPN that safeguards your privacy

From
Free
Rated
-
Full reviewWebsite

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.; ProtonVPN free plan limited to one device at a time
  • They diverge on capability: Longhorn covers Per-volume controllers, ProtonVPN covers No-logs policy.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Longhorn and ProtonVPN actually diverge.

Attributes where Longhorn and ProtonVPN differ
AttributeLonghornProtonVPN
Pricing modelOpen source, no licence feefreemium
PlatformsLinux, KubernetesWindows, macOS, Linux, iOS, Android
CategoryCloudCybersecurity
FoundedUnknown2014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 ProtonVPN

  • No-logs policy
  • Secure Core
  • Kill Switch
  • DNS leak protection
  • Tor over VPN
  • Split tunneling
  • NetShield ad-blocker
  • VPN Accelerator

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 ProtonVPN
  • Edge sites where shipping a storage array is impractical and three nodes is the whole clusternot ProtonVPN
  • A K3s deployment where the storage layer must be light enough to run alongside the workloadsnot ProtonVPN
  • A team that wants snapshots and S3 backups of persistent volumes without paying per-node storage licencesnot ProtonVPN

ProtonVPN

  • Privacy-focused browsing without subscription costnot Longhorn
  • Multi-device protection with Plus plan supporting 10 devicesnot Longhorn
  • Integrated access to Proton email and cloud services via Unlimited plannot 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.

ProtonVPN

  • Free plan limited to one device at a time
  • Free plan restricted to 10 countries with random selection
  • Pricing amounts not clearly published; shown as variable

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

ProtonVPN

Free

No published plan breakdown. See the ProtonVPN review.

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.
Longhorn review

Choose ProtonVPN if

  • You need no-logs policy.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want secure core.
ProtonVPN review

Questions people ask

Is Longhorn or ProtonVPN better?
Neither clearly leads. Longhorn starts at Free and ProtonVPN at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Longhorn or ProtonVPN?
Longhorn starts at Free and ProtonVPN at Free.
Does Longhorn or ProtonVPN run on more platforms?
Longhorn runs on Linux, Kubernetes. ProtonVPN runs on Windows, macOS, Linux, iOS, Android.
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 ProtonVPN is typically brought in for.
What can Longhorn do that ProtonVPN cannot?
Longhorn covers Per-volume controllers, Synchronous replication, Snapshots and backups, Volume expansion. ProtonVPN covers No-logs policy, Secure Core, Kill Switch, DNS leak protection.

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.

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.

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.

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