Backstage

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What is Backstage?

Backstage is an open source framework for building developer portals. Powered by a centralized software catalog, Backstage restores order to your microservices and infrastructure and enables your product teams to ship high-quality code quickly without compromising autonomy.

Backstage unifies all your infrastructure tooling, services, and documentation to create a streamlined development environment from end to end.

Out of the box, Backstage includes:

• Backstage Software Catalog for managing all your software such as microservices, libraries, data pipelines, websites, and ML models
• Backstage Software Templates for quickly spinning up new projects and standardizing your tooling with your organization’s best practices
• Backstage TechDocs for making it easy to create, maintain, find, and use technical documentation, using a "docs like code" approach
• Plus, a growing ecosystem of open source plugins that further expand Backstage’s customizability and functionality

Backstage was created by Spotify but is now hosted by the Cloud Native Computing Foundation (CNCF) as an Incubation level project. For more information, see the announcement.

Project roadmap

For information about the detailed project roadmap including delivered milestones, see the Roadmap.

Getting Started

To start using Backstage, see the Getting Started documentation.

Documentation

The documentation of Backstage includes:

• Main documentation
• Software Catalog
• Architecture (Decisions)
• Designing for Backstage
• Storybook - UI components

Community

To engage with our community, you can use the following resources:

• Discord chatroom - Get support or discuss the project
• Contributing to Backstage - Start here if you want to contribute
• RFCs - Help shape the technical direction
• FAQ - Frequently Asked Questions
• Code of Conduct - This is how we roll
• Adopters - Companies already using Backstage
• Blog - Announcements and updates
• Newsletter - Subscribe to our email newsletter
• Backstage Community Sessions - Join monthly meetups and explore Backstage community
• Give us a star ⭐️ - If you are using Backstage or think it is an interesting project, we would love a star ❤️

Governance

See the GOVERNANCE.md document in the backstage/community repository.

License

Copyright 2020-2025 © The Backstage Authors. All rights reserved. The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see our Trademark Usage page: https://www.linuxfoundation.org/trademark-usage

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0

Security

Please report sensitive security issues using Spotify's bug-bounty program rather than GitHub.

For further details, see our complete security release process.

@backstage/frontend-defaults

0.2.3

Patch Changes

• fa5650c: Forwarded the new pluginInfoResolver option for createApp.
• Updated dependencies
  • @backstage/plugin-app@0.1.10
  • @backstage/frontend-plugin-api@0.10.3
  • @backstage/frontend-app-api@0.11.3
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.3-next.1

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.10.3-next.1
  • @backstage/plugin-app@0.1.10-next.1
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/frontend-app-api@0.11.3-next.1

0.2.3-next.0

Patch Changes

• fa5650c: Forwarded the new pluginInfoResolver option for createApp.
• Updated dependencies
  • @backstage/plugin-app@0.1.10-next.0
  • @backstage/frontend-plugin-api@0.10.3-next.0
  • @backstage/frontend-app-api@0.11.3-next.0

0.2.2

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.10.2
  • @backstage/frontend-app-api@0.11.2
  • @backstage/plugin-app@0.1.9
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.2-next.3

Patch Changes

• Updated dependencies
  • @backstage/frontend-app-api@0.11.2-next.3
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/frontend-plugin-api@0.10.2-next.1
  • @backstage/plugin-app@0.1.9-next.3

0.2.2-next.2

Patch Changes

• Updated dependencies
  • @backstage/config@1.3.2
  • @backstage/frontend-app-api@0.11.2-next.2
  • @backstage/frontend-plugin-api@0.10.2-next.1
  • @backstage/plugin-app@0.1.9-next.2
  • @backstage/errors@1.2.7

0.2.2-next.1

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.10.2-next.0
  • @backstage/plugin-app@0.1.9-next.1
  • @backstage/frontend-app-api@0.11.2-next.1
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.2-next.0

Patch Changes

• Updated dependencies
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/frontend-app-api@0.11.2-next.0
  • @backstage/frontend-plugin-api@0.10.1
  • @backstage/plugin-app@0.1.9-next.0

0.2.1

Patch Changes

• a47fd39: Removes instances of default React imports, a necessary update for the upcoming React 19 migration.

  https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html

• 3bee3c3: The new package frontend-dynamic-features-loader provides a frontend feature loader that dynamically loads frontend features based on the new frontend system and exposed as module federation remotes. This new frontend feature loader works hand-in-hand with a new server of frontend plugin module federation remotes, which is added as part of backend dynamic feature service in package @backstage/backend-dynamic-feature-service.

• Updated dependencies
  • @backstage/frontend-plugin-api@0.10.1
  • @backstage/frontend-app-api@0.11.1
  • @backstage/plugin-app@0.1.8
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.1-next.1

Patch Changes

• a47fd39: Removes instances of default React imports, a necessary update for the upcoming React 19 migration.

  https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html

• Updated dependencies

  • @backstage/frontend-plugin-api@0.10.1-next.1
  • @backstage/frontend-app-api@0.11.1-next.1
  • @backstage/plugin-app@0.1.8-next.1
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.1-next.0

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.10.1-next.0
  • @backstage/plugin-app@0.1.8-next.0
  • @backstage/frontend-app-api@0.11.1-next.0
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.0

Minor Changes

• 4823831: Introduced a createFrontendFeatureLoader() function, as well as a FrontendFeatureLoader interface, to gather several frontend plugins, modules or feature loaders in a single exported entrypoint and load them, possibly asynchronously. This new feature, very similar to the createBackendFeatureLoader() already available on the backend, supersedes the previous CreateAppFeatureLoader type which has been deprecated.
• 8250ffe: BREAKING: Dropped support for the removed opaque @backstage/ExtensionOverrides and @backstage/BackstagePlugin types.

Patch Changes

• 4d18b55: It's now possible to provide a middleware that wraps all extension factories by passing an extensionFactoryMiddleware to either createApp() or createSpecializedApp().
• abcdf44: Internal refactor to match updated createSpecializedApp.
• e3f19db: Feature discovery and resolution logic used in createApp is now exposed via the discoverAvailableFeatures and resolveAsyncFeatures functions respectively.
• Updated dependencies
  • @backstage/frontend-app-api@0.11.0
  • @backstage/frontend-plugin-api@0.10.0
  • @backstage/plugin-app@0.1.7
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.2.0-next.2

Minor Changes

• 8250ffe: BREAKING: Dropped support for the removed opaque @backstage/ExtensionOverrides and @backstage/BackstagePlugin types.

Patch Changes

• 4d18b55: It's now possible to provide a middleware that wraps all extension factories by passing an extensionFactoryMiddleware to either createApp() or createSpecializedApp().
• abcdf44: Internal refactor to match updated createSpecializedApp.
• e3f19db: Feature discovery and resolution logic used in createApp is now exposed via the discoverAvailableFeatures and resolveAsyncFeatures functions respectively.
• Updated dependencies
  • @backstage/frontend-app-api@0.11.0-next.2
  • @backstage/frontend-plugin-api@0.10.0-next.2
  • @backstage/plugin-app@0.1.7-next.2
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.1.7-next.1

Patch Changes

• Updated dependencies
  • @backstage/plugin-app@0.1.7-next.1
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/frontend-app-api@0.10.6-next.1
  • @backstage/frontend-plugin-api@0.9.6-next.1

0.1.7-next.0

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.6-next.0
  • @backstage/frontend-app-api@0.10.6-next.0
  • @backstage/plugin-app@0.1.7-next.0

0.1.6

Patch Changes

• 58ec9e7: Removed older versions of React packages as a preparatory step for upgrading to React 19. This commit does not introduce any functional changes, but removes dependencies on previous React versions, allowing for a cleaner upgrade path in subsequent commits.
• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.5
  • @backstage/frontend-app-api@0.10.5
  • @backstage/plugin-app@0.1.6
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.1.6-next.3

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.5-next.3
  • @backstage/frontend-app-api@0.10.5-next.3
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/plugin-app@0.1.6-next.3

0.1.6-next.2

Patch Changes

• Updated dependencies
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/frontend-app-api@0.10.5-next.2
  • @backstage/frontend-plugin-api@0.9.5-next.2
  • @backstage/plugin-app@0.1.6-next.2

0.1.6-next.1

Patch Changes

• 58ec9e7: Removed older versions of React packages as a preparatory step for upgrading to React 19. This commit does not introduce any functional changes, but removes dependencies on previous React versions, allowing for a cleaner upgrade path in subsequent commits.
• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.5-next.1
  • @backstage/frontend-app-api@0.10.5-next.1
  • @backstage/plugin-app@0.1.6-next.1
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7

0.1.6-next.0

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.5-next.0
  • @backstage/frontend-app-api@0.10.5-next.0
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/plugin-app@0.1.6-next.0

0.1.5

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.4
  • @backstage/config@1.3.2
  • @backstage/errors@1.2.7
  • @backstage/frontend-app-api@0.10.4
  • @backstage/plugin-app@0.1.5

0.1.5-next.0

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.4-next.0
  • @backstage/frontend-app-api@0.10.4-next.0
  • @backstage/plugin-app@0.1.5-next.0
  • @backstage/config@1.3.2-next.0
  • @backstage/errors@1.2.7-next.0

0.1.4

Patch Changes

• Updated dependencies
  • @backstage/plugin-app@0.1.4
  • @backstage/frontend-plugin-api@0.9.3
  • @backstage/errors@1.2.6
  • @backstage/config@1.3.1
  • @backstage/frontend-app-api@0.10.3

0.1.4-next.2

Patch Changes

• Updated dependencies
  • @backstage/errors@1.2.6-next.0
  • @backstage/config@1.3.1-next.0
  • @backstage/frontend-app-api@0.10.3-next.2
  • @backstage/frontend-plugin-api@0.9.3-next.2
  • @backstage/plugin-app@0.1.4-next.2

0.1.4-next.1

Patch Changes

• Updated dependencies
  • @backstage/config@1.3.0
  • @backstage/errors@1.2.5
  • @backstage/frontend-app-api@0.10.3-next.1
  • @backstage/frontend-plugin-api@0.9.3-next.1
  • @backstage/plugin-app@0.1.4-next.1

0.1.4-next.0

Patch Changes

• Updated dependencies
  • @backstage/plugin-app@0.1.4-next.0
  • @backstage/frontend-plugin-api@0.9.3-next.0
  • @backstage/config@1.3.0
  • @backstage/errors@1.2.5
  • @backstage/frontend-app-api@0.10.3-next.0

0.1.2

Patch Changes

• 44b82da: The default config loader no longer requires process.env.APP_CONFIG to be set, allowing config to be read from other sources instead.
• Updated dependencies
  • @backstage/config@1.3.0
  • @backstage/errors@1.2.5
  • @backstage/frontend-app-api@0.10.1
  • @backstage/frontend-plugin-api@0.9.1
  • @backstage/plugin-app@0.1.2

0.1.2-next.2

Patch Changes

• Updated dependencies
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4
  • @backstage/frontend-app-api@0.10.1-next.2
  • @backstage/frontend-plugin-api@0.9.1-next.2
  • @backstage/plugin-app@0.1.2-next.2

0.1.2-next.1

Patch Changes

• Updated dependencies
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4
  • @backstage/frontend-app-api@0.10.1-next.1
  • @backstage/frontend-plugin-api@0.9.1-next.1
  • @backstage/plugin-app@0.1.2-next.1

0.1.2-next.0

Patch Changes

• Updated dependencies
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4
  • @backstage/frontend-app-api@0.10.1-next.0
  • @backstage/frontend-plugin-api@0.9.1-next.0
  • @backstage/plugin-app@0.1.2-next.0

0.1.1

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.0
  • @backstage/frontend-app-api@0.10.0
  • @backstage/plugin-app@0.1.1
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4

0.1.1-next.2

Patch Changes

• Updated dependencies
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4
  • @backstage/frontend-app-api@0.10.0-next.2
  • @backstage/frontend-plugin-api@0.9.0-next.2
  • @backstage/plugin-app@0.1.1-next.2

0.1.1-next.1

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.0-next.1
  • @backstage/frontend-app-api@0.10.0-next.1
  • @backstage/plugin-app@0.1.1-next.1
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4

0.1.1-next.0

Patch Changes

• Updated dependencies
  • @backstage/frontend-plugin-api@0.9.0-next.0
  • @backstage/frontend-app-api@0.10.0-next.0
  • @backstage/plugin-app@0.1.1-next.0
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4

0.1.0

Minor Changes

• 7c80650: Initial release of this package, which provides a default app setup through the createApp function. This replaces the existing createApp method from @backstage/frontend-app-api.

Patch Changes

• 7d19cd5: Added a new CreateAppOptions type for the createApp options.
• 7d19cd5: Added createPublicSignInApp, used to creating apps for the public entry point.
• 836127c: Updated dependency @testing-library/react to ^16.0.0.
• Updated dependencies
  • @backstage/frontend-plugin-api@0.8.0
  • @backstage/frontend-app-api@0.9.0
  • @backstage/plugin-app@0.1.0
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4

0.1.0-next.1

Patch Changes

• 836127c: Updated dependency @testing-library/react to ^16.0.0.
• Updated dependencies
  • @backstage/plugin-app@0.1.0-next.2
  • @backstage/frontend-app-api@0.9.0-next.2
  • @backstage/frontend-plugin-api@0.8.0-next.2
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4

0.1.0-next.0

Minor Changes

• 7c80650: Initial release of this package, which provides a default app setup through the createApp function. This replaces the existing createApp method from @backstage/frontend-app-api.

Patch Changes

• 7d19cd5: Added a new CreateAppOptions type for the createApp options.
• 7d19cd5: Added createPublicSignInApp, used to creating apps for the public entry point.
• Updated dependencies
  • @backstage/frontend-app-api@0.9.0-next.1
  • @backstage/frontend-plugin-api@0.8.0-next.1
  • @backstage/plugin-app@0.1.0-next.1
  • @backstage/config@1.2.0
  • @backstage/errors@1.2.4