Keycloak

Open-source identity and access management server (OpenID Connect, OAuth 2.0, SAML) that you run yourself to handle sign-in, SSO and user federation for your apps.

Visit keycloak.org ↗Pricing & calculator Alternatives

Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Where it fits

Authentication · Open-source serviceA self-hosted identity server with SSO, OpenID Connect, SAML and user federation for several apps at once.Trade-off: A heavy Java server to run, upgrade and theme; more admin console than a small app usually needs.

How Keycloak itself is built

1 tools, from its own code, website and Product Hunt page.

GitHub Pages

Who uses it

3 makers' products, each linked to the source that shows it, and 16 open-source projects that declare it in their code.

The maker says so 3Declared in code 16How evidence is collected →

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Batteries IncludedOne click DevOps platform Kubernetes to Postgres RAG

“Keycloak is the class leader in Oauth, and it powers our single single for OIDC.”

AuthenticationMaker says so · source ↗

NeosyncOpen source data anonymization platform for Developers

“Keycloak runs our auth, is open source and easy to use.”

AuthenticationMaker says so · source ↗

supOSThe most down-to-the-ground realizer of UNS

“Account and permission management, all handled by Keycloak”

AuthenticationMaker says so · source ↗

ever-gauzy Ever® Gauzy™ - Open Business Management Platform (ERP/CRM/HRM/ATS/PM) - https://gauzy.coAuthenticationIn its code · source ↗

kodus-ai AI Code Review with Full Control Over Model Choice and Costs.AuthenticationIn its code · source ↗

Directus Instant REST/GraphQL API and admin app layered on top of any SQL database, usable as a h…AuthenticationIn its code · source ↗

jitsu Jitsu is an open-source Segment alternative. Fully-scriptable data ingestion engine for…AuthenticationIn its code · source ↗

mcp-gateway-registry Enterprise-ready MCP Gateway & Registry that centralizes AI development tools with secur…AuthenticationIn its code · source ↗

automatisch The open source Zapier alternative. Build workflow automation without spending time and…AuthenticationIn its code · source ↗

mcp-context-forge An AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs…AuthenticationIn its code · source ↗

feast The Open Source Feature Store for AI/MLAuthenticationIn its code · source ↗

messages Collaborative inbox for La Suite territorialeAuthenticationIn its code · source ↗

Refine Open-source React meta-framework for building admin panels, dashboards and CRUD-heavy in…AuthenticationIn its code · source ↗

openproject OpenProject is the leading open source project management software for product, project…AuthenticationIn its code · source ↗

abp-samples Sample solutions built with the ABP FrameworkAuthenticationIn its code · source ↗

microcks The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Nati…AuthenticationIn its code · source ↗

dcm4chee-arc-light DICOM Archive J2EE applicationAuthenticationIn its code · source ↗

probo Open source solutions for SOC2, GDPR, and ISO27001AuthenticationIn its code · source ↗

theia-cloud AuthenticationIn its code · source ↗

Open source: a project that declares Keycloak as a dependency in its public code — verifiable, but not necessarily a live product.

What makers say

1 makers on why they use Keycloak, in their own words on Product Hunt.

Keycloak is the class leader in Oauth, and it powers our single single for OIDC.

Batteries Included Sep 2026 ↗

Loved and watch-outs

Themes that recur in makers' words and Hacker News comments, each linked to what it summarises, with how Product Hunt tags its reviews.

Reliability and open issues

Most wanted on GitHub

SCIM support👍 245 · opened Aug 2022 · active Sep 2026
Trusted Device two factor authenticator👍 112 · opened Nov 2021 · active Sep 2026
Keycloak Organizations👍 100 · opened Jun 2024 · active Sep 2026
[OID4VP] Log in using the EUDI-Wallet👍 96 · opened May 2026 · active Sep 2026
Impersonate does not work with separate admin hostname👍 88 · opened Mar 2022 · active Sep 2026

Open on 2026-10-04 in keycloak/keycloak, with activity in the last year — issues and feature requests by 👍.

Alternatives to Keycloak

All alternatives by situation →

Auth0Complex identity needs and enterprise compliance.Free tier21 makers · authentication Compare with Keycloak →

ClerkDropping prebuilt sign-in, profile and organization UI into a React or Next.js app.Free tier305 makers · authentication

SupabaseApps already on Supabase — auth is part of the same project as the database.Open sourceFree tier13 makers · authentication

FirebaseMobile and client-heavy apps already using Firebase.Free tier4 makers · authentication

Better AuthTypeScript apps that want users and sessions in their own database, at no cost.Open sourceFree tier6 makers · authentication

WorkOSB2B SaaS that will need enterprise SSO and directory sync.Free tier19 makers · authentication

Hexclave (Stack Auth)A Clerk-style developer experience you can also self-host.Open sourceFree tier2 makers · authentication

LogtoOpen-source OIDC auth with hosted sign-in pages, organizations and roles, on a cloud with 50,000 free monthly active users or on your own servers.Open sourceFree tier2 makers · authentication

SuperTokensOpen-source auth with prebuilt login UI and backend SDKs, self-hosted for free or on their cloud.Open sourceFree tier1 makers · authentication

Questions makers ask about Keycloak

Is Keycloak free?

Yes — it is free, open-source software.

Is Keycloak open source or self-hostable?

Open source, and you can self-host it. source ↗

Can AI coding agents work with Keycloak?

No llms.txt, official MCP server or CLI found yet.

Who uses Keycloak?

3 makers' products we track, each with a source, and 16 open-source projects declare it in their code. source ↗