Is Keycloak or Redocly better?

Neither clearly leads. Keycloak starts at Free and Redocly at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Keycloak or Redocly?

Keycloak has a free tier; the other does not. Paid plans start at Free for Keycloak and On request for Redocly.

Does Keycloak or Redocly run on more platforms?

Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API. Redocly runs on Web, Cloud, Self-hosted.

Can I use Keycloak for free?

Yes. Keycloak has a free tier, so you can try it without paying. Redocly starts at On request.

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 Redocly is typically brought in for.

What can Keycloak do that Redocly cannot?

Redocly covers OpenAPI reference docs, Spec linting, Developer portal, Versioning.

Developer Tools · head to head

Keycloak vs Redocly

Keycloak

Developer Tools

Open-source identity and access management server.

From: Free
Rated: -

Full review Website

Redocly

Documentation

API documentation and OpenAPI governance platform

From: On request
Rated: -

Full review Website

The short version

Only Keycloak has a free tier, so it costs nothing to try first.
Each has a real cost: Keycloak requires self-hosted deployment and operational expertise to install, configure and maintain; Redocly only as useful as your commitment to OpenAPI; teams without a maintained spec get little from it

Where they differ

Only the attributes on which Keycloak and Redocly actually diverge.

Attributes where Keycloak and Redocly differ
Attribute	Keycloak	Redocly
Starting price	Free	On request
Pricing model	open-source	Free open-source CLI and Redoc renderer; paid plans for the portal, published on the vendor site
Free tier	Yes	No
Platforms	Self-hosted, Docker, Kubernetes, Linux, Windows, API	Web, Cloud, Self-hosted
Category	Developer Tools	Documentation

Identical on both: 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 Redocly does not also cover.

Only in Redocly

OpenAPI reference docs
Spec linting
Developer portal
Versioning
Try it
Git workflow

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

Redocly

API teams whose reference docs are thin because the spec is thinnot Keycloak
Organisations enforcing API style rules across many teamsnot Keycloak
Developer portals combining guides with generated referencenot 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

Redocly

Only as useful as your commitment to OpenAPI; teams without a maintained spec get little from it
The portal and governance features are paid, while the open-source renderer covers only reference rendering
Linting rules are another thing to configure and argue about before value appears
Narrower than a general documentation platform, by design

Pricing, plan by plan

Keycloak

Free

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

Redocly

On request

No published plan breakdown. See the Redocly 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 Redocly if

You need openapi reference docs.
You work on Web, Cloud, Self-hosted.
You also want spec linting.

Redocly review

Questions people ask

Is Keycloak or Redocly better?: Neither clearly leads. Keycloak starts at Free and Redocly at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keycloak or Redocly?: Keycloak has a free tier; the other does not. Paid plans start at Free for Keycloak and On request for Redocly.
Does Keycloak or Redocly run on more platforms?: Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API. Redocly runs on Web, Cloud, Self-hosted.
Can I use Keycloak for free?: Yes. Keycloak has a free tier, so you can try it without paying. Redocly starts at On request.
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 Redocly is typically brought in for.
What can Keycloak do that Redocly cannot?: Redocly covers OpenAPI reference docs, Spec linting, Developer portal, Versioning.

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

Redocly: Is Redocly free?

The Redoc renderer and CLI are open source and free. The developer portal and governance features are paid, with pricing published on the vendor site.

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

Redocly: What does the linter do?

It enforces rules on the OpenAPI spec itself in CI — missing descriptions, naming, examples — so a poor spec fails the build rather than becoming poor documentation.

Keycloak: Is Keycloak free?

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

Source

Redocly: Do I need OpenAPI to use it?

Effectively yes. Without a maintained specification there is little for it to work with.

Keycloak vs Redocly

Keycloak

Redocly

The short version

Where they differ

What each one covers

Only in Keycloak

Only in Redocly

What people use each for

Keycloak

Redocly

Where each one falls short

Keycloak

Redocly

Pricing, plan by plan

Keycloak

Redocly

Which should you pick?

Choose Keycloak if

Choose Redocly if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Keycloak

More on Redocly

Keep looking

Other head to heads