Open source single Sign-On solutions gives teams full code access, no per-user licensing, and the freedom to self-host, but operational cost replaces license cost. These are the open source options in this category, followed by the full list for comparison.
2 of 12 products in this category match the open source filter and are highlighted below.
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Open source · Cloud / On-prem · Free trial
Keycloak covers OIDC, SAML and LDAP integration and is commonly deployed as the SSO layer and identity broker inside an organization's own network. There is no commercial license to buy, on-prem or in containers. The cost reappears as internal expertise. Operating and maintaining the server falls entirely to the team that deploys it.
Per-user · Cloud · Free trial
SAML and OIDC integrations that larger identity platforms charge extra to connect are included here, and that is what miniOrange is best known for. SMB and mid-market teams get workforce SSO, customer identity and MFA from a single vendor, covering both employee and end-customer logins, at per-user pricing that stays accessible at their scale.
The rest of the single Sign-On solutions category, listed because the open source filter above did not select them. Worth reading when the highlighted options do not fit.
Usage-based pricing · Cloud · Free trial
The rule engine is what developers reach for, since login flows can be customized per application instead of being standardized across an entire estate. Teams building multi-tenant SaaS or consumer-facing products get the most out of that flexibility. Enterprise identity governance is the weaker fit, and usually lands on a dedicated identity and access management platform with stronger lifecycle management.
Custom quote · Cloud
Depth in privileged access management is what separates CyberArk Identity from identity and access management products that stop at workforce single sign-on, which it also covers. The primary fit is enterprise teams carrying formal privilege management requirements, particularly in regulated industries such as finance and healthcare.
Per-user · Cloud · Free trial
Self-service enrollment is the practical detail in Duo, since users register their own devices and a rollout does not queue up at the help desk. Device trust is the capability that separates it from simpler OTP tokens, checking whether an endpoint meets security policy before access is granted. Licensing is per user, and hybrid work environments are where that device check earns its place.
Device-based · Cloud · Free trial
Organizations moving workloads off on-prem infrastructure use JumpCloud as the practical stand-in for Active Directory. Device management, single sign-on, MFA, and LDAP/RADIUS services come from one cloud directory, so identity and device administration do not need separate products. Device-based pricing covers Windows, macOS, and Linux alike.
Per-user · Cloud · Free trial
SSO, MFA, Conditional Access and device identity cover Microsoft 365 and the thousands of third-party applications already integrated with it. For organizations already invested in Microsoft's stack, Entra ID usually becomes the identity layer by default instead of being chosen against alternatives. Licensing is per user and the service runs entirely from Microsoft's cloud.
Per-user · Cloud · Free trial
Breadth of pre-built application integrations is why Okta is usually the first name on the list for workforce single sign-on. Lifecycle management comes with it. Pricing is per-user, with significant differences between tiers. Modeling both current headcount and the figure 18 months out is the step teams skip before they sign.
Per-user · Cloud · Free trial
SmartFactor authentication is OneLogin's distinguishing piece, scoring the context of an access request before deciding how much proof to ask for. Single sign-on and MFA sit around it. Mid-market and enterprise teams that find Okta pricing aggressive often look here next. The application catalog is broad, and per-user cost tends to come out more competitive at mid-market scale.
Custom quote · Cloud · Free trial
Workforce and customer identity sit in the same product line at PingOne. That breadth shapes who evaluates it. Enterprise teams needing identity governance alongside single sign-on tend to put Ping next to Okta and Microsoft Entra. Mid-market buyers have a harder time modeling the cost, since pricing is quoted case by case.
Custom quote · Cloud
RSA ID Plus carries MFA and identity management into the installed base RSA has long held across financial services, defense and government. Organizations that ran SecurID hardware tokens historically and now want cloud-based MFA tend to look here first, helped by the existing relationship and the migration path on offer. Commercial terms come by quote.
Custom quote · Cloud
Large organizations in financial services, healthcare and defense are effectively the only buyers, because periodic access review is a compliance obligation there and someone has to produce auditable evidence of who holds which entitlement. Access certification, role management and separation-of-duties enforcement are the working parts, delivered from the cloud on quoted terms.
The license is free, but hosting, maintenance, patching, and upgrades replace the vendor's license fee. Teams without dedicated ops resources often spend more on self-managed open source than on a managed commercial alternative.
Open source is strongest when you need full code control, on-premises deployment for compliance, or want to avoid vendor lock-in. It is weaker when your team lacks the ops capacity to maintain, patch, and scale the deployment.
Check community activity (commits, issues, and releases in the last six months), commercial support options, documentation quality, and the total operational burden against a managed alternative. A dormant project with no commercial backing is a risk.
