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Developer Tools · head to head

Backstage vs Dagger

Backstage logo

Backstage

Developer Tools

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

From
Free
Rated
-
Full reviewWebsite
Dagger logo

Dagger

Developer Tools

Programmable CI/CD engine that runs your pipeline as containers on any runner

From
Free
Rated
-
Full reviewWebsite

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.; Dagger dagger is not a CI provider, so you keep paying for GitHub Actions or GitLab runners underneath it; the Dagger Cloud subscription is an addition to your CI bill, not a replacement for it.
  • They diverge on capability: Backstage covers Software catalogue, Dagger covers Pipelines as code.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Backstage and Dagger actually diverge.

Attributes where Backstage and Dagger differ
AttributeBackstageDagger
Pricing modelOpen source, no licence feePer month per team for Dagger Cloud
PlatformsWeb, Self-hosted, Linux, Docker, KubernetesLinux, macOS, Windows, Self-hosted

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 Dagger

  • Pipelines as code
  • Local and CI parity
  • Content-addressed caching
  • Dagger Functions and modules
  • CI-provider agnostic
  • Dagger Cloud traces
  • GitHub Checks integration
  • Container-native execution

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 Dagger
  • A platform team enforcing golden paths, so a new service is scaffolded with logging, CI and security defaults already wired innot Dagger
  • A company consolidating scattered READMEs and Confluence pages into docs that live beside the code and cannot silently rot unnoticednot Dagger
  • A regulated business that needs an auditable register of every running service, its owner and its data classificationnot Dagger

Dagger

  • A platform team maintaining near-identical build YAML across forty repositories that wants one versioned module every repository calls insteadnot Backstage
  • An engineering organisation migrating off a CI provider that does not want to rewrite every pipeline as part of the migrationnot Backstage
  • A team whose engineers waste hours pushing commits to debug CI-only failures and needs to reproduce the exact run locallynot Backstage
  • A monorepo where most commits touch a small subset of services and cache-accurate step skipping cuts build minutes materiallynot 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.

Dagger

  • Dagger is not a CI provider, so you keep paying for GitHub Actions or GitLab runners underneath it; the Dagger Cloud subscription is an addition to your CI bill, not a replacement for it.
  • Writing pipelines in Go or TypeScript raises the barrier to entry: a release engineer who could edit a YAML step now needs to read code, and the people who can fix a broken build shrink to those comfortable with the SDK.
  • The engine runs as a container on the runner and needs a persistent cache volume to deliver its main benefit, so ephemeral CI runners give you correctness without the speed, and provisioning durable cache storage is extra platform work.
  • The Team plan caps at ten users and ten million events per month; an organisation of any size crosses that quickly and moves to Enterprise pricing that is not published, so cost at scale is unknowable up front.
  • The module ecosystem is young and thinly maintained relative to the marketplace of a mature CI provider, so integrations that exist as a one-line Action often have to be written yourself as a Dagger function.

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

Dagger

Free
  • IndividualFree
    • One user
    • One million events per month
    • Workflow logs and function call traces
  • Team$50/month
    • Up to ten users
    • Ten million events per month
    • Module insights and module catalogue
  • Enterprise$undefined/year
    • Custom user and event limits
    • SSO
    • Managed single-tenant deployment

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 Dagger if

  • You need pipelines as code.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Self-hosted.
  • You also want local and ci parity.
Dagger review

Questions people ask

Is Backstage or Dagger better?
Neither clearly leads. Backstage starts at Free and Dagger at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Backstage or Dagger?
Backstage starts at Free and Dagger at Free.
Does Backstage or Dagger run on more platforms?
Backstage runs on Web, Self-hosted, Linux, Docker, Kubernetes. Dagger runs on Linux, macOS, Windows, Self-hosted.
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 Dagger is typically brought in for.
What can Backstage do that Dagger cannot?
Backstage covers Software catalogue, Software templates, TechDocs, Plugin architecture. Dagger covers Pipelines as code, Local and CI parity, Content-addressed caching, Dagger Functions and modules.

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.

Dagger: Does Dagger replace GitHub Actions?

No. Dagger runs inside GitHub Actions or any other CI. It replaces the YAML that describes your pipeline steps, not the trigger and runner layer.

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.

Dagger: Is the engine open source?

Yes, the Dagger engine and SDKs are open source and free. Dagger Cloud, the observability product, is what costs money.

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.

Dagger: What is an event in the pricing?

Dagger Cloud meters pipeline telemetry events. One million per month is free; the Team plan at 50 USD per month allows ten million.

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.

Dagger: Can I run the same pipeline on my laptop?

Yes, that is the main reason teams adopt it. The dagger CLI executes the identical graph locally, so CI-only failures become reproducible.

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