Bukkit plugin that creates virtual players: Used for easy debugging of plugins through the console.
VirtualPlayers2 was made for developers who need to easily test their plugins against multiple versions of craftbukkit.
You can find the official builds at dev.bukkit.org
"Development builds of this project can be acquired at the provided maven repository." "These builds have not been approved by the BukkitDev staff. Use them at your own risk."
The dev builds are primarily for testing purposes.