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Cloud · head to head

Packer vs Spacelift

Packer logo

Packer

Cloud

Build automated machine images

From
Free
Rated
-
Full reviewWebsite
Spacelift logo

Spacelift

Developer Tools

Infrastructure-as-code orchestration for Terraform, OpenTofu, Pulumi and Kubernetes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Packer packer 1.10.0 and later is licensed under the Business Source License 1.1 with IBM Corporation as licensor, not an OSI open source licence; Spacelift users are unlimited and private workers are metered, so deployment concurrency rather than headcount drives the bill, which inverts how most engineering budgets are built and is easy to under-forecast.
  • They diverge on capability: Packer covers Image building, Spacelift covers Multi-tool orchestration.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Packer and Spacelift actually diverge.

Attributes where Packer and Spacelift differ
AttributePackerSpacelift
Pricing modelopen-sourceBy private worker and tier, not by user
PlatformsLinux, Windows, MacWeb, Self-hosted, Cloud
CategoryCloudDeveloper Tools
Founded2013Unknown

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 Packer

  • Image building
  • Multi-platform support
  • Provisioners
  • Builders
  • Post-processors
  • Variables
  • Data sources
  • Validation

Only in Spacelift

  • Multi-tool orchestration
  • Policy as code
  • Private workers
  • Spaces
  • Blueprints
  • Drift detection

What people use each for

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

Packer

  • Building identical machine images for multiple clouds from one templatenot Spacelift
  • Baking golden AMIs and VM images into a CI pipelinenot Spacelift
  • Creating immutable infrastructure artifacts consumed by Terraformnot Spacelift

Spacelift

  • Platform teams running infrastructure changes through approval gates rather than through application CInot Packer
  • Organisations standardising Terraform and OpenTofu across many teams with policy enforcementnot Packer
  • Estates needing private runners so cloud credentials never leave the networknot Packer
  • Teams wanting drift detection and reconciliation rather than plan-time checks alonenot Packer

Where each one falls short

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

Packer

  • Packer 1.10.0 and later is licensed under the Business Source License 1.1 with IBM Corporation as licensor, not an OSI open source licence
  • The Additional Use Grant forbids offering Packer to third parties on a hosted or embedded basis in a paid product that competes with IBM's paid versions of Packer
  • Each version converts to the MPL 2.0 Change License only four years after that version is first published, and the Change Date is set separately per version
  • Alternative licensing for uses outside the grant must be arranged with the licensor rather than taken under the public licence

Spacelift

  • Users are unlimited and private workers are metered, so deployment concurrency rather than headcount drives the bill, which inverts how most engineering budgets are built and is easy to under-forecast.
  • There is no affordable paid entry point. The free tier stops at two users and the next tier is a five-figure commitment with nothing in between.
  • Three of the five tiers are quote-only, so a shortlist cannot be costed without entering a sales process with each vendor on it.
  • The self-hosted build lags the hosted one, has no public worker pool and lacks the Azure and Google Cloud integrations available in the SaaS product, with OIDC federation offered as the workaround.
  • Stacks, Rego policies, Blueprints, Spaces and Spacelift-managed state are proprietary constructs, so leaving means rebuilding the orchestration layer rather than pointing it at a different runner.

Pricing, plan by plan

Packer

Free
  • Open SourceFree
    • Multi-platform image building
    • Template-driven
    • Provisioner support

Spacelift

Free
  • FreeFree
    • Two users
    • Public workers only
    • No private workers
  • Starter Plus$undefined/year
    • Unlimited users
    • Two public workers
    • One to two private workers
  • Business$undefined/year
    • Unlimited users
    • Three private workers
    • Quoted
  • Enterprise$undefined/year
    • Unlimited users
    • Five to thirty private workers
    • Self-hosted option

Which should you pick?

Choose Packer if

  • You need image building.
  • You want to start without paying.
  • You work on Linux, Windows, Mac.
  • You also want multi-platform support.
Packer review

Choose Spacelift if

  • You need multi-tool orchestration.
  • You want to start without paying.
  • You work on Web, Self-hosted, Cloud.
  • You also want policy as code.
Spacelift review

Questions people ask

Is Packer or Spacelift better?
Neither clearly leads. Packer starts at Free and Spacelift at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Packer or Spacelift?
Packer starts at Free and Spacelift at Free.
Does Packer or Spacelift run on more platforms?
Packer runs on Linux, Windows, Mac. Spacelift runs on Web, Self-hosted, Cloud.
Can I use Packer for free?
Both have a free tier, so you can try either at no cost before committing.
What is Packer best used for?
Packer is most often used for building identical machine images for multiple clouds from one template, baking golden amis and vm images into a ci pipeline, creating immutable infrastructure artifacts consumed by terraform. Of those, building identical machine images for multiple clouds from one template and baking golden amis and vm images into a ci pipeline are not what Spacelift is typically brought in for.
What can Packer do that Spacelift cannot?
Packer covers Image building, Multi-platform support, Provisioners, Builders. Spacelift covers Multi-tool orchestration, Policy as code, Private workers, Spaces.

Answered from the vendors’ own pages

Packer: How much does HashiCorp Packer cost?

Packer does not publish specific pricing on its website. The open-source Packer tool is free, while HCP Packer (HashiCorp's cloud-hosted version) offers a free trial, but detailed pricing requires contacting HashiCorp.

Source
Spacelift: How is Spacelift priced?

By tier and by private worker count rather than per user. Users are unlimited on every paid plan. The published figure on the pricing page carries no period label, and the FAQ describes the tier as an annual subscription, so confirm the period in writing.

Spacelift: Does it support OpenTofu?

Yes, and Spacelift sponsors the OpenTofu project, which is a substantive hedge for anyone avoiding Terraform under the Business Source Licence.

Spacelift: Is there a self-hosted version?

Yes, described as carrying Enterprise functionality, but it is priced on request and lags the hosted product on cloud integrations.

Spacelift: Why not just use the CI system we already have?

That is the real comparison. General purpose CI handles state, drift, approval gates and concurrency control for infrastructure poorly, and whether that is worth a five-figure floor depends on how much infrastructure change your organisation actually ships.

Spacelift: What happens to our pipelines if we leave?

They do not port. Rego policies, Blueprints, Spaces and managed state are Spacelift constructs and the orchestration has to be rebuilt elsewhere.

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