appengine-standard-archetype (GAE Standard, uses Cloud SDK based maven / gradle plugins)
appengine-flexible-archetype (GAE Flex, uses Cloud SDK based maven / gradle plugins)
appengine-skeleton-archetype (Older skeletion, uses Java SDK based maven plugin)
guestbook-archetype (GAE Standard, uses Objectify & Java SDK based maven plugin)
endpoints-skeleton-archetype (GAE Standard, uses Java SDK based maven plugin)
hello-endpoints-archetype (GAE Standard, uses Java SDK based maven plugin)