OPEN-SOURCE MIGRATION BENCHMARK
License: Apache-2.0
★ 25.3k GitHub Stars
Replace Auth0 / Clerk with Self-Hosted Keycloak
Battle-tested CNCF open-source identity and access management for modern applications and services Stop paying B2B Essentials ($130–$240/mo + MAU overages) ($130/mo for a 10-person team) and run Keycloak on a $4.50/mo Linux VPS with full data sovereignty.
10-Seat Annual Savings
+$1,506 / yr
vs Auth0 / Clerk standard plan
Container RAM & vCPU
1024 MB RAM
1.0 vCPU • Migration: Moderate
Recommended Cloud Box
$4.50/mo VPS
Hetzner CX22 (4GB RAM / 2 vCPU)
1-to-100 Seat Total Cost of Ownership (TCO) Table
Comparing Auth0 / Clerk (B2B Essentials ($130–$240/mo + MAU overages)) vs Keycloak on Hetzner CX22 (4GB RAM / 2 vCPU).
| Team Size | Auth0 / Clerk Cost | Keycloak VPS | Net Annual Savings |
|---|---|---|---|
| 1 Seat (Solo) | $130.00/mo ($1,560/yr) | $4.50/mo (CX22) | +$1,506 / year |
| 5 Seats | $130.00/mo ($1,560/yr) | $4.50/mo (CX22) | +$1,506 / year |
| 10 Seats | $130.00/mo ($1,560/yr) | $4.50/mo (CX22) | +$1,506 / year |
| 25 Seats | $130.00/mo ($1,560/yr) | $4.50/mo (CX22) | +$1,506 / year |
| 50 Seats | $130.00/mo ($1,560/yr) | $4.50/mo (CX22) | +$1,506 / year |
| 100 Seats | $130.00/mo ($1,560/yr) | $4.50/mo (CX22) | +$1,506 / year |
Production Docker Compose + Caddy Auto-SSL
Copy and run docker compose up -d on any Ubuntu 24.04 server.
# Production Docker Compose: Keycloak (Replaces Auth0 / Clerk)
services:
caddy:
image: caddy:2-alpine
restart: unless-stopped
ports:
- "80:80"
- "443:443"
volumes:
- ./Caddyfile:/etc/caddy/Caddyfile:ro
- caddy_data:/data
networks:
- stack_net
keycloak:
image: quay.io/keycloak/keycloak:latest
container_name: stack-keycloak
restart: unless-stopped
environment:
- "KC_DB=postgres"
- "KC_DB_URL=jdbc:postgresql://postgres:5432/keycloak"
- "KC_DB_USERNAME=postgres"
- "KC_DB_PASSWORD=${POSTGRES_PASSWORD:-strongpassword}"
- "KC_HOSTNAME=auth.${DOMAIN:-yourdomain.com}"
volumes:
- keycloak_data:/data
networks:
- stack_net
postgres:
image: pgvector/pgvector:pg16
container_name: stack-postgres
restart: unless-stopped
environment:
- "POSTGRES_USER=postgres"
- "POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-strongpassword}"
volumes:
- postgres_data:/var/lib/postgresql/data
networks:
- stack_net
networks:
stack_net:
driver: bridge
volumes:
caddy_data:
keycloak_data:
postgres_data:
Caddyfile (Automatic HTTPS Reverse Proxy):
# Automatic Let's Encrypt HTTPS for Keycloak
keycloak.{$DOMAIN:yourdomain.com} {
encode zstd gzip
reverse_proxy keycloak:8080
}
Why Teams Switch to Keycloak
- ✓Industry standard OIDC & SAML 2.0
- ✓Social logins, Passkeys & Kerberos/LDAP
- ✓Multi-tenant realm isolation
GitHub Repository
keycloak/keycloak
Official Website
www.keycloak.org
Docker Image
quay.io/keycloak/keycloak:latest
Database Needed
PostgreSQL 16
1-Click Cloud VPS Hosting
Deploy Keycloak in 60 Seconds
Sized automatically for Keycloak (1024MB container RAM + OS overhead).
PRODUCTION BOILERPLATE ZIP
Get All 16 Pre-Built Production Stacks + Encrypted S3 Backups
Includes pre-tuned docker-compose.yml, Caddy Auto-SSL, AES-256 encrypted nightly S3/R2 Postgres backups, and Ubuntu 24.04 UFW/Fail2ban hardening scripts.