Gluu Flex
Gluu Flex: A broad, self-hosted OAuth and federation suite for organizations that need vendor support. Ranked #29 of 33 in OAuth Server Software by our editors (6.5/10); pricing: 30-day trial; best for paid, supported self-hosted federation.
At a glance
- Editor score6.5 / 10
- Pricing30-day trial
- Best forPaid, supported self-hosted federation
- Free planNo
- OpenID ConnectYes
- Facts checked22 Sep 2026
Where it wins
- Supports OAuth/OIDC, SAML federation, SCIM, and dynamic registration
- Includes MFA, passwordless authentication, FIDO, OTP, and device flow
- Provides admin tooling for users, clients, scripts, metrics, and audit
Where it doesn't
- No permanent free plan; the available trial lasts 30 days
- Self-hosted deployment requires your team to operate the environment
- No AI features are included
Our verdict on Gluu Flex
Gluu Flex is a commercially supported identity and access management distribution built around an open-source core. It is designed for organizations operating their own authentication and authorization environments, with support for OpenID Connect, SAML-based single sign-on, OAuth client management, dynamic registration, JWT access tokens, token introspection, client-credentials authentication, SCIM connections, and multifactor authentication. Its web-based Admin UI covers configuration, users, clients, scripts, metrics, and audit.
Pricing is organized by monthly active users. The 100 MAU plan costs $500 USD, the 400 MAU plan costs $1,750 USD, and the 1,600 MAU plan costs $6,125 USD. A 30-day trial license is available, but Flex does not have a permanent free plan. The plans provide a straightforward capacity-based starting point for teams evaluating a supported deployment, while the product itself covers both end-user authentication and machine-to-machine access through client credentials and token introspection.
Platform fit is a central strength. Flex supports web, Linux, and self-hosted deployments, with deployment options including Helm, Docker for development and testing, and VM packages for Ubuntu, SUSE, and Red Hat systems. Its ecosystem includes Google, Facebook, Apple, Microsoft Azure AD, Active Directory, Keycloak, and SCIM. Authentication options include FIDO, OTP, email, device flow, multifactor, and passwordless methods. Gluu Flex suits teams that need broad federation and API identity capabilities under their own operational control. Organizations seeking a hosted service, a permanent free tier, or AI features should choose an alternative.
Your product? Our editors can test Gluu Flex in depth and publish a review, labelled as paid · from $149/mo →
Gluu Flex pricing
All 3 Gluu Flex plans and prices →
Gluu Flex fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| OpenID Connect | Yes |
| SAML support | Yes |
| Self-hosting | Yes |
| Token introspection | Yes |
| Machine-to-machine auth | Yes |
| Deployment model | Self_hosted |
| Free trial | 30 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Web, Linux |
| Support | Tickets, Docs |
| Built for | Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: Google, Facebook, Apple, Microsoft Azure AD, Active Directory, Keycloak … |
| Pricing | 30-day trial (source) |
| Website | gluu.org |
| Facts checked | 22 Sep 2026 |
Gluu Flex integrations
Gluu Flex lists 7 integrations on its own site.
- Apple
- Microsoft Azure AD
- Active Directory
- Keycloak
- SCIM
Alternatives to Gluu Flex
- KeycloakA broad, self-hosted IAM server for standards-based authentication and authorization.9.4
- authentikA broad, self-hosted identity stack for teams that need open-source control.9.2
- WSO2 Identity ServerA broad self-hosted IAM platform for enterprise OAuth, OIDC, SAML, and provisioning needs.9.1
See all Gluu Flex alternatives →
Also Ranked In
Gluu Flex is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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