Keycloak
Open-source · self-hostable · replaces 1 SaaS tool on os-alt
keycloak/keycloak · alive · ★ 34.3k · last commit 1d ago · 2810 open issues
License: Apache-2.0
Good fit for B2B apps that want SAML + OIDC + LDAP federation in one server, and don't mind Java footprint.
Weak at Java-heavy; theming and UX out of the box are dated vs Auth0.
In a terminal? npx -y github:SolvoHQ/os-alt-cli auth0 prints
the Auth0 comparison table including Keycloak.
how the CLI works →
Replaces these SaaS
- Auth0 · Identity / SSO / authentication-as-a-service
Auth0 → Tenant → Export users (JSON, including hashed passwords if on bcrypt). Keycloak → Admin Console → realm-import via JSON or the Keycloak `kcadm.sh` CLI. Bcrypt hashes import directly — users keep their passwords. Map Auth0 Rules / Actions to Keycloak event listeners or authentication-flow scripts.
README badges for the SaaS this replaces
Maintainers and forks: drop a badge in your README to link readers from the SaaS-comparison page back to your repo.
