Amazon Cognito
Customer identity and access management service for adding user sign-up, sign-in, and authentication to apps
Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Open Source Identity and Access Management for Modern Applications
Add authentication and secure services with minimum effort. Keycloak handles user federation, strong authentication, user management, and fine-grained authorization without storing credentials yourself.
Keycloak is a comprehensive identity and access management solution that eliminates the complexity of building authentication and authorization into your applications. Instead of managing user credentials, session handling, and security protocols yourself, Keycloak provides a battle-tested platform that integrates seamlessly with modern applications and services.
The platform delivers user federation to connect with existing identity stores, strong authentication including multi-factor options, centralized user management, and fine-grained authorization controls. Built with support for industry-standard protocols like OIDC and SAML, Keycloak works across web, mobile, and API architectures.
Available as a downloadable distribution or Docker image, Keycloak can be deployed on-premises or in cloud environments. The project includes adapters for Java and Node.js, with extensive documentation and quickstarts to accelerate integration. Written primarily in Java with TypeScript admin interfaces, it's designed for teams seeking production-ready identity management without vendor lock-in.
When teams consider Keycloak, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Multi-Application SSO
Users authenticate once and access multiple internal applications without re-entering credentials, improving security and user experience.
API Gateway Authentication
Secure microservices and APIs with token-based authentication, enabling fine-grained access control across distributed systems.
Legacy System Integration
Federate existing LDAP or Active Directory users into modern OIDC-based applications without migrating identity stores.
Customer Identity Management
Provide self-service registration, profile management, and social login for customer-facing applications with customizable branding.
Keycloak supports OpenID Connect (OIDC) and SAML 2.0, the two dominant standards for modern identity and access management.
Yes, Keycloak provides user federation to connect with LDAP, Active Directory, and custom identity stores without migrating user data.
Download the distribution and run the startup script, or use the official Docker image. Both options support a quick start-dev mode for testing.
Keycloak includes official adapters for Java and Node.js. Client libraries for other languages can use standard OIDC or SAML protocols.
Yes, Keycloak is used in production by enterprises worldwide. It supports clustering, high availability, and has extensive security hardening options.
Project at a glance
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