Recently I hold a presentation about Avaje Ebean on my local Java User Group – The Java Student User Group.

Ebean is a alternative to the established Java Persistence API (JPA) implementations like Hibernate, EclipseLink etc.
It uses the JPA Annotations like
@Table
@Entity
@OneToOne
@OneToMany
@ManyToOne
@ManyToMany
@Column
@Enumerated
@Temporal

etc.
to map your Java Objects to your database tables, but thats all that it has in common with JPA and its implementations.

You can download the ebean presentation.