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Developer Tools · head to head

Keycloak vs SolidJS

Keycloak logo

Keycloak

Developer Tools

Open-source identity and access management server.

From
Free
Free plan
Yes
Full reviewWebsite
SolidJS logo

SolidJS

Web Development

Reactive JavaScript framework with no virtual DOM

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; SolidJS much smaller ecosystem than React, so many problems have no off-the-shelf library
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Keycloak and SolidJS actually diverge.

Attributes where Keycloak and SolidJS differ
AttributeKeycloakSolidJS
Pricing modelopen-sourceOpen source, no licence fee
PlatformsSelf-hosted, Docker, Kubernetes, Linux, Windows, APIWeb
CategoryDeveloper ToolsWeb Development

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 Keycloak

Nothing recorded that SolidJS does not also cover.

Only in SolidJS

  • No virtual DOM
  • Components run once
  • JSX syntax
  • Small bundles

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 SolidJS
  • Companies with existing LDAP/Active Directory systems needing federated authenticationnot SolidJS
  • Open-source projects and communities requiring free IAM without licensing costsnot SolidJS
  • Enterprises building custom identity workflows requiring fine-grained authorisationnot SolidJS
  • Teams with sufficient operational expertise to manage infrastructurenot SolidJS

SolidJS

  • Interfaces where update performance is the binding constraintnot Keycloak
  • Teams comfortable with React syntax who want finer-grained reactivitynot Keycloak
  • Applications where bundle size directly affects the businessnot 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

SolidJS

  • Much smaller ecosystem than React, so many problems have no off-the-shelf library
  • The React-like syntax is misleading: components run once, and React habits produce subtle bugs
  • Smaller hiring pool and fewer learning resources than the mainstream frameworks

Pricing, plan by plan

Keycloak

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

SolidJS

Free
  • SolidJSFree
    • Full library
    • Commercial use permitted
    • No usage limits

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 SolidJS if

  • You need no virtual dom.
  • You want to start without paying.
  • You also want components run once.
SolidJS review

Questions people ask

Is Keycloak or SolidJS better?
Neither clearly leads. Keycloak starts at Free and SolidJS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keycloak or SolidJS?
Keycloak starts at Free and SolidJS at Free.
Does Keycloak or SolidJS run on more platforms?
Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API. SolidJS 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 SolidJS is typically brought in for.
What can Keycloak do that SolidJS cannot?
SolidJS covers No virtual DOM, Components run once, JSX syntax, Small bundles.

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
SolidJS: Is SolidJS free?

Yes, open source under the MIT licence.

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
SolidJS: Is SolidJS just React without the virtual DOM?

The syntax is similar but the model is not. Solid components run once and reactivity is fine-grained, so patterns that are correct in React can be wrong in Solid.

Keycloak: Is Keycloak free?

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

Source
SolidJS: Why is SolidJS fast?

It compiles away much of the framework and updates individual DOM nodes directly, rather than re-rendering components and diffing a virtual DOM.

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