Is Backstage or Spacelift better?

Neither clearly leads. Backstage 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, Backstage or Spacelift?

Backstage starts at Free and Spacelift at Free.

Does Backstage or Spacelift run on more platforms?

Backstage runs on Web, Self-hosted, Linux, Docker, Kubernetes. Spacelift runs on Web, Self-hosted, Cloud.

Can I use Backstage for free?

Both have a free tier, so you can try either at no cost before committing.

What is Backstage best used for?

Backstage is most often used for an engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morning, a platform team enforcing golden paths, so a new service is scaffolded with logging, ci and security defaults already wired in, a company consolidating scattered readmes and confluence pages into docs that live beside the code and cannot silently rot unnoticed, a regulated business that needs an auditable register of every running service, its owner and its data classification. Of those, an engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morning and a platform team enforcing golden paths, so a new service is scaffolded with logging, ci and security defaults already wired in are not what Spacelift is typically brought in for.

What can Backstage do that Spacelift cannot?

Backstage covers Software catalogue, Software templates, TechDocs, Plugin architecture. Spacelift covers Multi-tool orchestration, Policy as code, Private workers, Spaces.

Developer Tools · head to head

Backstage vs Spacelift

Backstage

Developer Tools

Open source internal developer portal framework created and open sourced by Spotify

From: Free
Rated: -

Full review Website

Spacelift

Developer Tools

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

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Backstage backstage is a framework rather than a product: there is no supported turnkey install, so getting to a usable portal means a TypeScript and React project your team owns, hosts and upgrades forever.; 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: Backstage covers Software catalogue, Spacelift covers Multi-tool orchestration.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Backstage and Spacelift actually diverge.

Attributes where Backstage and Spacelift differ
Attribute	Backstage	Spacelift
Pricing model	Open source, no licence fee	By private worker and tier, not by user
Platforms	Web, Self-hosted, Linux, Docker, Kubernetes	Web, Self-hosted, Cloud

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

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 Backstage

Software catalogue
Software templates
TechDocs
Plugin architecture
Kubernetes plugin
Search
Entity ownership model
Auth provider integrations

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.

Backstage

An engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morningnot Spacelift
A platform team enforcing golden paths, so a new service is scaffolded with logging, CI and security defaults already wired innot Spacelift
A company consolidating scattered READMEs and Confluence pages into docs that live beside the code and cannot silently rot unnoticednot Spacelift
A regulated business that needs an auditable register of every running service, its owner and its data classificationnot Spacelift

Spacelift

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

Where each one falls short

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

Backstage

Backstage is a framework rather than a product: there is no supported turnkey install, so getting to a usable portal means a TypeScript and React project your team owns, hosts and upgrades forever.
Upstream releases move quickly and plugin APIs have broken across major versions, so a customised deployment accumulates upgrade debt and teams routinely fall months behind on versions they cannot cheaply catch up on.
The catalogue is only as good as the YAML descriptors engineers remember to write; without enforcement the register drifts out of date, and a developer portal nobody trusts is abandoned faster than one that never existed.
Community plugin quality varies sharply, with many unmaintained or pinned to old core versions, so the plugin that made the business case may be the one blocking your next upgrade.
Spotify Portal, the packaged commercial route, publishes no price at all and is quoted as a custom annual subscription, so the only cost you can actually forecast up front is the self-hosted one, which is the option with the largest hidden staffing bill.

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

Backstage

Free

Backstage (open source)Free
- Apache 2.0 licence
- Software catalogue, templates, TechDocs and search
- Full plugin ecosystem
Spotify Portal for Backstage$undefined/year
- Packaged commercial distribution from Spotify
- Spotify premium plugins including Soundcheck and Insights
- Simplified setup and managed upgrade path

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 Backstage if

You need software catalogue.
You want to start without paying.
You work on Web, Self-hosted, Linux, Docker, Kubernetes.
You also want software templates.

Backstage 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 Backstage or Spacelift better?: Neither clearly leads. Backstage 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, Backstage or Spacelift?: Backstage starts at Free and Spacelift at Free.
Does Backstage or Spacelift run on more platforms?: Backstage runs on Web, Self-hosted, Linux, Docker, Kubernetes. Spacelift runs on Web, Self-hosted, Cloud.
Can I use Backstage for free?: Both have a free tier, so you can try either at no cost before committing.
What is Backstage best used for?: Backstage is most often used for an engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morning, a platform team enforcing golden paths, so a new service is scaffolded with logging, ci and security defaults already wired in, a company consolidating scattered readmes and confluence pages into docs that live beside the code and cannot silently rot unnoticed, a regulated business that needs an auditable register of every running service, its owner and its data classification. Of those, an engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morning and a platform team enforcing golden paths, so a new service is scaffolded with logging, ci and security defaults already wired in are not what Spacelift is typically brought in for.
What can Backstage do that Spacelift cannot?: Backstage covers Software catalogue, Software templates, TechDocs, Plugin architecture. Spacelift covers Multi-tool orchestration, Policy as code, Private workers, Spaces.

Answered from the vendors’ own pages

Backstage: Is Backstage free?

The project is Apache 2.0 with no licence fee. The real cost is engineering time; teams commonly dedicate one to two engineers permanently to running it.

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.

Backstage: Do I need to write code to use it?

Yes. Configuring and extending a Backstage application is a TypeScript and React project. This is the single most common misjudgement buyers make.

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.

Backstage: What is Spotify Portal for Backstage?

A commercial distribution from Spotify with premium plugins and support, generally available since October 2025 and sold as a quoted annual subscription with no published price.

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.

Backstage: Who owns the project?

Spotify created and open sourced it; it is now a CNCF project, so the upstream roadmap is not solely Spotify controlled.

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.

Backstage vs Spacelift

Backstage

Spacelift

The short version

Where they differ

What each one covers

Only in Backstage

Only in Spacelift

What people use each for

Backstage

Spacelift

Where each one falls short

Backstage

Spacelift

Pricing, plan by plan

Backstage

Spacelift

Which should you pick?

Choose Backstage if

Choose Spacelift if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Backstage

More on Spacelift

Keep looking

Other head to heads