Centaur is a lightweight Java library which simplifies the popular features of Google App Engine such as storing and retrieving items from DataStore and Memcache. Also included is a simplified API for sending Email using Google App Engine.
A centaur is a mythological creature with the head, arms, and torso of a human and the body and legs of a horse. In the case of this project, the head, arms and torso are JavaBeans (as they are intuitive and straight forward), and the body and legs (because they are lean, strong, and fast) are Google App Engine.