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Technology · head to head

Finxact vs Keycloak

Finxact logo

Finxact

Technology

Cloud native core banking, sold as Finxact from Fiserv since the 2022 acquisition

From
On request
Free plan
No
Full reviewWebsite
Keycloak logo

Keycloak

Developer Tools

Open-source identity and access management server.

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Keycloak has a free tier, so it costs nothing to try first.
  • Each has a real cost: Finxact fiserv sells several core platforms, so a buyer should demand written investment and support commitments for Finxact specifically rather than trusting that the surviving brand implies a protected roadmap.; Keycloak requires self-hosted deployment and operational expertise to install, configure and maintain
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Finxact and Keycloak actually diverge.

Attributes where Finxact and Keycloak differ
AttributeFinxactKeycloak
Starting priceOn requestFree
Pricing modelquoteopen-source
Free tierNoYes
PlatformsWeb, API, CloudSelf-hosted, Docker, Kubernetes, Linux, Windows, API
CategoryTechnologyDeveloper Tools

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 Finxact

  • Cloud native core
  • Real time posting
  • Configurable product definitions
  • Fiserv ecosystem access
  • Embedded banking support
  • Open API model
  • Multi tenant deployment
  • Regulatory reporting hooks

Only in Keycloak

Nothing recorded that Finxact does not also cover.

What people use each for

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

Finxact

  • A United States regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challengernot Keycloak
  • A community bank launching an embedded banking or sponsor bank programme on modern railsnot Keycloak
  • An institution already running Fiserv card and payment services that wants the core on the same vendor relationshipnot Keycloak
  • A bank standing up a new digital brand on a clean core while leaving the existing back book in placenot Keycloak

Keycloak

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

Where each one falls short

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

Finxact

  • Fiserv sells several core platforms, so a buyer should demand written investment and support commitments for Finxact specifically rather than trusting that the surviving brand implies a protected roadmap.
  • Core migration is a multi year programme where the licence is a small share of total cost against integration, data migration and parallel running.
  • Buying the core from Fiserv strengthens a relationship that already covers cards and payments, which weakens your negotiating position across the whole estate at renewal.
  • It is a United States product with United States regulatory and product assumptions, so international banks get little from it.
  • Being part of a very large vendor changes the service experience: the responsiveness that made Finxact attractive as a startup is not guaranteed inside a company of Fiserv's scale.

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

Pricing, plan by plan

Finxact

On request
  • Finxact from Fiserv$undefined/year
    • Quoted per institution, commonly on accounts or asset size
    • Implementation and integration costs typically exceed the licence fee
    • Bundled commercially with other Fiserv services in many deals

Keycloak

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

Which should you pick?

Choose Finxact if

  • You need cloud native core.
  • You work on Web, API, Cloud.
  • You also want real time posting.
Finxact review

Choose Keycloak if

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

Questions people ask

Is Finxact or Keycloak better?
Neither clearly leads. Finxact starts at On request and Keycloak at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Finxact or Keycloak?
Keycloak has a free tier; the other does not. Paid plans start at On request for Finxact and Free for Keycloak.
Does Finxact or Keycloak run on more platforms?
Finxact runs on Web, API, Cloud. Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API.
Can I use Keycloak for free?
Yes. Keycloak has a free tier, so you can try it without paying. Finxact starts at On request.
What is Finxact best used for?
Finxact is most often used for a united states regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challenger, a community bank launching an embedded banking or sponsor bank programme on modern rails, an institution already running fiserv card and payment services that wants the core on the same vendor relationship, a bank standing up a new digital brand on a clean core while leaving the existing back book in place. Of those, a united states regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challenger and a community bank launching an embedded banking or sponsor bank programme on modern rails are not what Keycloak is typically brought in for.
What can Finxact do that Keycloak cannot?
Finxact covers Cloud native core, Real time posting, Configurable product definitions, Fiserv ecosystem access.

Answered from the vendors’ own pages

Finxact: Is Finxact still sold under its own name?

Yes. Fiserv acquired it in 2022 and continues to market it as Finxact from Fiserv, winning named core deals with it.

Keycloak: What protocols does Keycloak support?

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

Source
Finxact: Is it genuinely cloud native?

Yes, API first with real time posting on public cloud, rather than a hosted version of a legacy core.

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
Finxact: How long is a migration?

Plan in years. Even a focused deployment is a multi year programme once integration and data migration are counted.

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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