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Developer Tools · head to head

Keycloak vs RubyMine

Keycloak logo

Keycloak

Developer Tools

Open-source identity and access management server.

From
Free
Rated
-
Full reviewWebsite
RubyMine logo

RubyMine

Developer Tools

JetBrains IDE for Ruby and Ruby on Rails development

From
$24/month
Rated
-
Full reviewWebsite

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; RubyMine no permanently free tier for commercial use; requires an ongoing subscription.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Keycloak and RubyMine actually diverge.

Attributes where Keycloak and RubyMine differ
AttributeKeycloakRubyMine
Starting priceFree$24/month
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsSelf-hosted, Docker, Kubernetes, Linux, Windows, APIwindows, mac, linux
FoundedUnknown2000

Identical on both: 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 Keycloak

Nothing recorded that RubyMine does not also cover.

Only in RubyMine

  • Rails-aware coding assistance
  • Integrated debugger
  • Test runner integration
  • Database tools
  • Version control integration
  • Docker support

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

RubyMine

  • Building and maintaining Ruby on Rails applicationsnot Keycloak
  • Debugging Ruby web applicationsnot Keycloak
  • Running and managing RSpec or Minitest suitesnot Keycloak
  • Working across Ruby, JavaScript, and SQL in one projectnot 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

RubyMine

  • No permanently free tier for commercial use; requires an ongoing subscription.
  • More resource-intensive than lightweight editors such as Sublime Text.
  • Focused primarily on Ruby, so polyglot teams may prefer IntelliJ IDEA Ultimate with plugins instead.
  • Startup time can be slower than simpler text editors on older hardware.

Pricing, plan by plan

Keycloak

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

RubyMine

$24/month
  • Individual$24/month
    • Personal use license
    • Access to RubyMine
    • Free for students and open-source maintainers
  • Organization$34/month
    • Business use license
    • Access to RubyMine
    • Volume and renewal discounts

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 RubyMine if

  • You need rails-aware coding assistance.
  • You work on windows, mac, linux.
  • You also want integrated debugger.
RubyMine review

Questions people ask

Is Keycloak or RubyMine better?
Neither clearly leads. Keycloak starts at Free and RubyMine at $24/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keycloak or RubyMine?
Keycloak has a free tier; the other does not. Paid plans start at Free for Keycloak and $24/month for RubyMine.
Does Keycloak or RubyMine run on more platforms?
Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API. RubyMine runs on windows, mac, linux.
Can I use Keycloak for free?
Yes. Keycloak has a free tier, so you can try it without paying. RubyMine starts at $24/month.
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 RubyMine is typically brought in for.
What can Keycloak do that RubyMine cannot?
RubyMine covers Rails-aware coding assistance, Integrated debugger, Test runner integration, Database tools.

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
RubyMine: How much does RubyMine cost?

RubyMine is sold as a JetBrains Toolbox subscription starting around $24/month for individuals and $34/month for organizations, with free licenses available for students and open-source maintainers.

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
RubyMine: Is there a free trial?

JetBrains provides a free trial period for RubyMine so developers can evaluate it before purchasing a subscription.

Source
Keycloak: Is Keycloak free?

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

Source
RubyMine: What platforms does RubyMine support?

RubyMine runs as a desktop application on Windows, macOS, and Linux via JetBrains Toolbox.

Source
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