JAnnotation is a lightweight persistence framework for Java5.it is most simple to use. it does not requires any xml configuration file, or environment variable. The only one thing it needs to start running is that you provide the working DataSource.
Tachyon Server is a identity Management solution, base on LDAP and Java. Tachyon software provide Single SignON (SSO) for enterprise application and identity lifecycle management. In the future, tachyon project will support liberty alliance 1.1 spec.
faas is a federated authentication and authority server