Persistant aims to simplify or eliminate many of the repetitive tasks which are encountered when dealing with Java ORM packages. It generates data access objects and builds queries using EasyMock-style expectations, targeting various persistence APIs.

MMORPGs utilize peristant worlds, meaning that the world continues to exist even after you log off. - Instances can be persistant for a period of time as well, allowing you to return to them and pick up where you left off.