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Amazon Cognito alternatives: 6 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Amazon Cognito: developer experience and docs are often described as clunky, and password hashes cannot be exported, making migration hard. We ranked 6 alternatives by how directly each one replaces Amazon Cognito, then by reviews, real visits and how recently each app's facts were checked against its own website. Auth0 currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Keycloak logoKeycloakOpen sourceYesSelf-hosted, Linux, macOS +14 of 457.2
  1. Keycloak logo

    1. KeycloakTop pick

    Best for: Organisations that want standards-based SSO on their own infrastructure at no licence cost

    Open sourceSelf-hostableSelf-hosted, Linux, macOS, Windows

    57.2

    score / 100

    Why switch from Amazon Cognito

    Run your own identity server, including on AWS, with no per-user fees.

    Pros

    • Free and open source under Apache 2.0
    • Supports OIDC, OAuth 2.0 and SAML with LDAP and AD federation
    • Mature, widely deployed and well understood

    Cons

    • You run, scale and upgrade it yourself
    • Admin concepts and theming have a steep learning curve
    • Login pages look dated without custom themes
    Visit Keycloak Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Keycloak a good Amazon Cognito alternative?

    Verified facts

    4 of 4 verified
    License
    Apache-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Protocols
    OpenID Connect, OAuth 2.0, SAML
    Checked Oct 25, 2026keycloak.org(opens source in a new tab)
    Directory federation
    LDAP and Active Directory
    Checked Oct 25, 2026keycloak.org(opens source in a new tab)
    Deployment
    Container image for Docker, Podman, Kubernetes
    Checked Oct 25, 2026keycloak.org(opens source in a new tab)

The best Amazon Cognito alternative for…

The highest-ranked app in this list for each need.

Auth0 logo

Best Amazon Cognito alternative for most people

Auth0

Far better developer experience and login customisation, at a higher per-user price.

SuperTokens logo

Best Amazon Cognito alternative for a free option

SuperTokens

Open-source and self-hostable, so you keep user data and can migrate freely.

Cl

Best Amazon Cognito alternative for a free plan you can upgrade

Clerk

Drop-in components and a smoother setup for web apps.

Keycloak logo

Best Amazon Cognito alternative for open source

Keycloak

Run your own identity server, including on AWS, with no per-user fees.

FusionAuth logo

Best Amazon Cognito alternative for self-hosting

FusionAuth

Self-hostable on AWS with full API control and exportable users.

Keycloak logo

Best Amazon Cognito alternative for Mac

Keycloak

Run your own identity server, including on AWS, with no per-user fees.

Keycloak logo

Best Amazon Cognito alternative for Windows

Keycloak

Run your own identity server, including on AWS, with no per-user fees.

Keycloak logo

Best Amazon Cognito alternative for Linux

Keycloak

Run your own identity server, including on AWS, with no per-user fees.

Firebase logo

Best Amazon Cognito alternative for iPhone and Android

Firebase

Google's equivalent, with simple client SDKs and a generous free auth tier for mobile apps.

Auth0 logo

Best Amazon Cognito alternative for working in the browser

Auth0

Far better developer experience and login customisation, at a higher per-user price.

Amazon Cognito alternatives: common questions

What is the best alternative to Amazon Cognito?

Auth0 ranks first right now. Far better developer experience and login customisation, at a higher per-user price. Clerk and SuperTokens follow it in our ranking.

Is there a free alternative to Amazon Cognito?

Yes. Auth0 (free plan + paid), Clerk (free plan + paid), SuperTokens (open source) and Keycloak (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Amazon Cognito?

Yes: SuperTokens and Keycloak. SuperTokens and Keycloak can also be self-hosted.

Which Amazon Cognito alternatives work on Linux?

Keycloak and FusionAuth run on Linux.

Why do people switch from Amazon Cognito?

The complaints we hear most: developer experience and docs are often described as clunky; password hashes cannot be exported, making migration hard; limited customisation of hosted login pages.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Amazon Cognito, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.