# ac Access Control: client and server authentication and authorization implementations for user and group management. - cadcAccessControl - Access control clients and common model objects and exceptions. - cadcAccessControl-Server - Access control web service implementation. - cadcAccessControl-Admin - Administrative tool for managing users. - cadcTomcat - Tomcat 7 authentication realm implementation that uses the AC web service. Please see the README.md file in each of these modules for build, deployment and customization details.