Authentication and access-control framework
Identity and access management for modern applications and services
Identity & Single Sign On for all earthlings and beyond
CloudFoundry User Account and Authentication (UAA) Server
MaxKey SSO ,Leading-Edge IAM-IDaas(Identity and Access Management)
A Java-based LDAP API
FIDO® Certified StrongKey FIDO Server (SKFS)
Identity management and federations integration
A SigV4 authentication plugin for the open-source DataStax Java Driver
Tomcat SPNEGO/Kerberos Authenticator and Active Directory Realm
JNDI DirContext source builder utility
Mature LDAP, LDIF and DSML client with i18n support.
Identity4J is a suite of Java Identity and Authentication Connectors
Access Management and Single Signon platform
NTLMv2 authentication library and filter for Java
Two-factor authentication system
tacacsplus is an opensource java TACACS+ library
The Identity Manager provides a solution to manage the user life cycle
Open Source Web Single Sign-On