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Developer Tools · head to head

Keycloak vs Svelte

Keycloak logo

Keycloak

Developer Tools

Open-source identity and access management server.

From
Free
Free plan
Yes
Full reviewWebsite
Svelte logo

Svelte

Web Development

A love letter to web development

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Keycloak requires self-hosted deployment and operational expertise to install, configure and maintain; Svelte licensed under the MIT License per svelte.dev; as open source software it has no paid tier or vendor price to compare
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Keycloak and Svelte actually diverge.

Attributes where Keycloak and Svelte differ
AttributeKeycloakSvelte
PlatformsSelf-hosted, Docker, Kubernetes, Linux, Windows, APIWeb
CategoryDeveloper ToolsWeb Development

Identical on both: starting price (Free), pricing model (open-source), free tier (Yes), user rating (Not yet rated).

What people use each for

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

Keycloak

  • Organisations requiring self-hosted identity infrastructure for compliance or data residencynot Svelte
  • Companies with existing LDAP/Active Directory systems needing federated authenticationnot Svelte
  • Open-source projects and communities requiring free IAM without licensing costsnot Svelte
  • Enterprises building custom identity workflows requiring fine-grained authorisationnot Svelte
  • Teams with sufficient operational expertise to manage infrastructurenot Svelte

Svelte

  • Frontend web application developmentnot Keycloak

Where each one falls short

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

Keycloak

  • Requires self-hosted deployment and operational expertise to install, configure and maintain
  • No managed cloud option provided by Red Hat; organisations must operate infrastructure themselves or use third-party distributions
  • Clustering and high-availability configurations require additional operational knowledge
  • Community support only; commercial support requires third-party vendors or distributions

Svelte

  • Licensed under the MIT License per svelte.dev; as open source software it has no paid tier or vendor price to compare
  • Svelte is a compiler rather than a runtime library by design, per svelte.dev, so components must be compiled ahead of time and cannot be interpreted directly in the browser without a build step

Pricing, plan by plan

Keycloak

Free
  • Open-sourceFree
    • Full platform functionality
    • Self-hosted deployment
    • Community support

Svelte

Free

No published plan breakdown. See the Svelte review.

Which should you pick?

Choose Keycloak if

  • You want to start without paying.
  • You work on Self-hosted, Docker, Kubernetes, Linux, Windows, API.
Keycloak review

Choose Svelte if

  • You want to start without paying.
Svelte review

Questions people ask

Is Keycloak or Svelte better?
Neither clearly leads. Keycloak starts at Free and Svelte at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keycloak or Svelte?
Keycloak starts at Free and Svelte at Free.
Does Keycloak or Svelte run on more platforms?
Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API. Svelte runs on Web.
Can I use Keycloak for free?
Both have a free tier, so you can try either at no cost before committing.
What is Keycloak best used for?
Keycloak is most often used for organisations requiring self-hosted identity infrastructure for compliance or data residency, companies with existing ldap/active directory systems needing federated authentication, open-source projects and communities requiring free iam without licensing costs, enterprises building custom identity workflows requiring fine-grained authorisation. Of those, organisations requiring self-hosted identity infrastructure for compliance or data residency and companies with existing ldap/active directory systems needing federated authentication are not what Svelte is typically brought in for.

Answered from the vendors’ own pages

Keycloak: What protocols does Keycloak support?

Keycloak supports OpenID Connect, OAuth 2.0 and SAML 2.0 protocols for authentication and authorisation.

Source
Svelte: How much does Svelte cost?

Svelte is completely free and open source under the MIT license. There are no paid plans, subscriptions, or licensing fees for any use case.

Source
Keycloak: Can Keycloak integrate with existing user directories?

Yes. Keycloak supports user federation with LDAP and Active Directory systems, allowing organisations to leverage existing user directories.

Source
Svelte: Who maintains and funds Svelte?

Svelte is backed by Vercel as the primary corporate sponsor, along with community donors and corporate sponsors including GitHub, Cohere, Sanity, Sentry, and Sourcegraph. Development is maintained by full-time and part-time open source maintainers.

Source
Keycloak: Is Keycloak free?

Yes. Keycloak is fully open-source and free to deploy and use. No licensing fees are required.

Source
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