Okta Single Sign-On - subscription license - unlimited OIN applications, 20

Reliable single sign-on service that integrates with all your web and mobile apps. An SSO application with a full-featured federation engine and flexible access policy. One user-friendly way for end-users to access all their applications, tailored to each device and fully customizable. A flexible and secure user store, integration to AD/LDAP across multiple domains and self-service AD/LDAP password reset.