If you’re looking for an open-source application that supports both Single Sign-On (SSO) and Identity Provider (IdP) management, here are some excellent choices:
1. Keycloak
• Features:
• Acts as both an IdP and SSO platform.
• Supports authentication protocols like OAuth2, OpenID Connect, and SAML.
• Enables user federation with external IdPs like LDAP, Active Directory, and social logins.
• Provides identity brokering, allowing it to act as an intermediary between apps and external IdPs.
• Use Case: A comprehensive solution for managing identities, users, and authentication for multiple apps.
2. Gluu Server
• Features:
• Combines IdP services with SSO.
• Supports a wide array of protocols, including OAuth2, OpenID Connect, and SAML.
• Includes advanced features like adaptive authentication, UMA (User-Managed Access), and multi-tenancy.
• Offers flexible user directory integration and IdP orchestration.
• Use Case: Ideal for organizations needing scalable IdP and SSO services with advanced customization options.
3. FusionAuth
• Features:
• Acts as both an IdP and SSO provider.
• Features robust user management, JWT support, and identity brokering.
• Offers multi-factor authentication and passwordless login options.
• Comes with easy integration for modern applications through SDKs and APIs.
• Use Case: Developer-friendly solution for managing users and providing unified authentication across apps.
4. WSO2 Identity Server
• Features:
• Full-featured IdP with SSO support.
• Supports a wide variety of standards, including OAuth2, OpenID Connect, SAML, and WS-Federation.
• Includes advanced capabilities like identity federation, account linking, and adaptive authentication.
• Use Case: Best for organizations needing extensive identity governance alongside authentication.
• WSO2 Identity Server Official Site
5. Authelia
• Features:
• Lightweight authentication and authorization server.
• Manages user authentication for apps and can function as an IdP in some configurations.
• Supports integration with reverse proxies like Traefik and Nginx for SSO.
• Use Case: Ideal for self-hosted environments requiring simple IdP and SSO functionality.
Recommendation
For a comprehensive IdP + SSO management solution, Keycloak is an excellent starting point due to its rich feature set and active community. If you need advanced scalability and governance, Gluu Server or WSO2 Identity Server may be better options.
Let me know if you’d like help setting one up or comparing specific features!
Here’s a comparative table summarizing key data for Keycloak, Gluu, FusionAuth, WSO2 Identity Server, and Authelia, based on their capabilities and target markets.
Organization Revenue Market Share Industry Key Customers
Keycloak Open-source, revenue from Red Hat subscriptions Widely used but specific market share unknown IT, Software, Enterprise Identity Management Varies due to open-source nature, often adopted by developers and enterprises like financial services and healthcare.
Gluu Not publicly disclosed; revenue primarily from subscriptions Popular in IAM, smaller than Keycloak Enterprise IAM, SaaS, Security Large organizations like universities, governments, and healthcare systems.
FusionAuth Not publicly disclosed; funded by SaaS subscriptions Emerging player in IAM Developers, Startups, Enterprises Used by tech-savvy SMBs and growing startups globally.
WSO2 Identity Server Not publicly disclosed; funded through enterprise services and tools Established in enterprise IAM Enterprise, Telecom, Financial Services Customers include top telecom and financial firms globally.
Authelia Open-source, no official revenue Niche market share among self-hosting users Developers, SMBs, Tech enthusiasts Popular with open-source adopters and developers managing small to mid-scale services.
Observations:
1. Revenue Models: Keycloak and Authelia are purely open-source, while others monetize through subscription plans, consulting, and premium features.
2. Market Share: Keycloak and WSO2 have significant adoption in enterprise IAM markets. Gluu and FusionAuth target niche segments like developers and SMBs.
3. Industries: All focus on industries needing identity and access management (IAM), including IT, healthcare, telecom, and financial services.
4. Customers: While Keycloak and Authelia are favored by developers and open-source enthusiasts, Gluu, FusionAuth, and WSO2 cater more to enterprise customers with support needs.
If you need a deeper dive into a specific organization, let me know!