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Cloud · head to head

Kustomize vs Trilio

Kustomize logo

Kustomize

Cloud

Template-free customisation of Kubernetes YAML

From
Free
Rated
-
Full reviewWebsite
Trilio logo

Trilio

Backup

Backup and recovery for OpenStack, Kubernetes and Red Hat Virtualization

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Kustomize no packaging or distribution story, which is exactly what Helm charts provide; Trilio coverage is deliberately narrow, so a mixed estate with VMware and physical servers needs a second backup product and two sets of restore procedures.
  • They diverge on capability: Kustomize covers Overlay patching, Trilio covers OpenStack backup.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Kustomize and Trilio actually diverge.

Attributes where Kustomize and Trilio differ
AttributeKustomizeTrilio
Pricing modelOpen source, no licence feePer node per year
PlatformsKubernetes, Linux, macOS, WindowsLinux, Web
CategoryCloudBackup

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 Kustomize

  • Overlay patching
  • No templating language
  • Built into kubectl
  • Generators

Only in Trilio

  • OpenStack backup
  • Kubernetes backup
  • OpenShift Virtualization
  • Open format backups
  • Incremental forever
  • Self-service restore
  • Free basic edition

What people use each for

The jobs each tool is most often brought in to do.

Kustomize

  • Managing dev, staging and production variants of the same manifestsnot Trilio
  • Keeping manifests readable and directly applyable rather than templatednot Trilio
  • Patching third-party manifests without forking themnot Trilio

Trilio

  • A telco running an OpenStack cloud whose incumbent backup vendor supports it only through generic agentsnot Kustomize
  • An organisation migrating virtual machines from VMware to OpenShift Virtualization and needing protection on the new platform from day onenot Kustomize
  • A research institution protecting tenant workloads where each tenant should restore its own data without a ticketnot Kustomize
  • A platform team wanting to evaluate Kubernetes backup properly on ten nodes before committing budgetnot Kustomize

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Kustomize

  • No packaging or distribution story, which is exactly what Helm charts provide
  • Deeply nested overlays become hard to follow, and reasoning about the final output requires building it
  • No release lifecycle: nothing tracks what is installed or supports rollback the way Helm does
  • Patch syntax is fiddly for anything beyond simple field replacement

Trilio

  • Coverage is deliberately narrow, so a mixed estate with VMware and physical servers needs a second backup product and two sets of restore procedures.
  • Trilio is a small vendor next to the backup incumbents, and buyers with ten year retention obligations should assess the risk of the company being acquired or wound down.
  • Enterprise pricing is per node or per virtual machine and is not published, which makes it hard to compare against per-terabyte competitors without going through sales.
  • The free basic edition stops at ten nodes with community support only, so the step from evaluation to production is a full commercial negotiation rather than a tier upgrade.
  • Restore performance depends on the object storage or NFS target you supply, and egress charges from a cloud object store during a large recovery sit outside the vendor quote entirely.

Pricing, plan by plan

Kustomize

Free
  • KustomizeFree
    • Full functionality
    • No usage limits
    • Community support

Trilio

Free
  • Basic EditionFree
    • Up to ten nodes
    • No time limit
    • Community support only
  • Enterprise Edition$undefined/year
    • Priced per node or per virtual machine annually
    • No scale limits
    • OpenStack, Kubernetes, OpenShift and Red Hat Virtualization

Which should you pick?

Choose Kustomize if

  • You need overlay patching.
  • You want to start without paying.
  • You work on Kubernetes, Linux, macOS, Windows.
  • You also want no templating language.
Kustomize review

Choose Trilio if

  • You need openstack backup.
  • You want to start without paying.
  • You work on Linux, Web.
  • You also want kubernetes backup.
Trilio review

Questions people ask

Is Kustomize or Trilio better?
Neither clearly leads. Kustomize starts at Free and Trilio at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kustomize or Trilio?
Kustomize starts at Free and Trilio at Free.
Does Kustomize or Trilio run on more platforms?
Kustomize runs on Kubernetes, Linux, macOS, Windows. Trilio runs on Linux, Web.
Can I use Kustomize for free?
Both have a free tier, so you can try either at no cost before committing.
What is Kustomize best used for?
Kustomize is most often used for managing dev, staging and production variants of the same manifests, keeping manifests readable and directly applyable rather than templated, patching third-party manifests without forking them. Of those, managing dev, staging and production variants of the same manifests and keeping manifests readable and directly applyable rather than templated are not what Trilio is typically brought in for.
What can Kustomize do that Trilio cannot?
Kustomize covers Overlay patching, No templating language, Built into kubectl, Generators. Trilio covers OpenStack backup, Kubernetes backup, OpenShift Virtualization, Open format backups.

Answered from the vendors’ own pages

Kustomize: Is Kustomize free?

Yes, open source and part of the Kubernetes project.

Trilio: Is the free edition production usable?

It is functionally complete up to ten nodes with community support only. Use it to evaluate, but understand that production incidents have no vendor behind them at that tier.

Kustomize: Kustomize or Helm?

Kustomize patches plain YAML and keeps bases readable; Helm templates and packages applications with a release lifecycle. Many teams use both — Helm to install third-party charts, Kustomize to patch them.

Trilio: Does it support OpenShift Virtualization?

Yes, which is the main reason it appears on shortlists for organisations moving virtual machines off VMware.

Kustomize: Do I need to install Kustomize?

No. It is built into kubectl, available through kubectl apply -k.

Trilio: Where are backups stored?

On NFS or S3-compatible object storage you provide, in an open format rather than a proprietary vendor container.

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