jGuard is written in java. his goal is to provide a security framework based on jaas (java authentication and authorization security) . this framework is written for web and standalone applications, to resolve simply, access control problems.
AccesStream is a Java-based, embeddable identity and access management (IAM), security and access reporting platform. AccesStream includes Single Sign-On using SAML 2.0 and provides profile storage with LDAP v3 access for integration with Linux PAM
LDAP+IMAP Web Administration - Will be a tool to manage email accounts on a PostFix+Cyrus+OpenLDAP environment. Multiple IMAP and LDAP server support is planned.
cSuite is a large "suite" of modules including a helpdesk, project/parts/client/workflow management, etc., written in Java with a MySQL backend. Version 1.0.0 expected Spring 2006.