Head-to-Head Comparison · Alternative to AWS Cognito · 🔐 security
AWS Cognito vs Keycloak
Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services. Here is how Keycloak ($0/mo open source) stacks up against AWS Cognito ($6/mo) across cost, hosting, data privacy, and real-world trade-offs.
Keycloak is a verified Apache-2.0-licensed open-source replacement for AWS Cognito. Switching from AWS Cognito ($6/mo) saves $72/yr per solo seat, or $360/yr for a 5-person team. Deployment: Runs on Self-host.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed Auth0.
Keycloak
$0.00/mo · Apache-2.0
AWS Cognito vs Keycloak Specifications
facts verified 2026-11-07
| Dimension | AWS Cognito (Paid) | Keycloak (Replacement) |
|---|---|---|
| Monthly Price | $6 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $72 / yr | $0 / yr (Save $72) |
| 1-Year Cost (5 seats) | $360 / yr | $0 / yr (Save $360) |
| 1-Year Cost (10 seats) | $720 / yr | $0 / yr (Save $720) |
| Source & License | Proprietary SaaS | open source Apache-2.0 |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hosteddocker to self-host |
| GitHub Stars | — | ★ 37.7k (active nov 2026) |
Deep Dive: Switching from AWS Cognito to Keycloak
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed Auth0.
How to deploy Keycloak
Clone https://github.com/keycloak/keycloak or deploy with Docker Compose
What it takes to run
Deploy via Docker or binary release from GitHub and configure environment variables.
Where your data lives
All application data and configuration live on your own server or local database.
Why fork Keycloak instead of vibe-coding a AWS Cognito clone?
Instead of paying recurring SaaS fees for AWS Cognito or rebuilding it from scratch, deploy one of the 12 battle-tested open-source alternatives like Hanko.
AWS Cognito vs Keycloak FAQ
Is Keycloak a good free alternative to AWS Cognito?+
Yes. Keycloak is a verified open-source (Apache-2.0) replacement for AWS Cognito. Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services.
What is the catch when switching from AWS Cognito to Keycloak?+
Requires self-hosting setup, updates, and server maintenance compared to managed Auth0.
How much do you save switching from AWS Cognito to Keycloak?+
AWS Cognito costs $6/mo ($72/yr) per seat, whereas Keycloak is $0/mo. Switching saves $72/yr for a solo user, $360/yr for a 5-person team, and $720/yr for a 10-person team.
How do I install or self-host Keycloak instead of AWS Cognito?+
Install: Clone https://github.com/keycloak/keycloak or deploy with Docker Compose. Setup: Deploy via Docker or binary release from GitHub and configure environment variables.
