As has been explained previously Caldonia runs many mods in order to provide facilities and safety to users. This page lists which mods are in use, if you've seen any which don't change the balance within the game please suggest them.

CraftBukkit
Modified version of the official Minecraft server, this supports all other mods running.

BigBrother
Records all actions within the server, permits administrators to roll back changes performed by players or even the environment (i.e. creepers, fires, etc.).

WorldGuard
Controls players ability to build within the different worlds and zones within each world.

WorldEdit
Hugely powerful world editing suite, can be used to move extremely large structures around the map or worlds. Primarily used by WorldGuard.

Wormhole X-Treme
Powers the Stargate network, enabling portals to operate.

AutoSave
Ensures that CraftBukkit regularly exports in memory data to prevent loss in case of crash.

CraftIRC
Provides an IRC interface for administrators to the in game chat. Public access to the IRC server is not currently available.

dynmap (Currently Disabled)
Produces a live updated map of the various worlds within the server, currently disabled due to poor performance and difficulty to keep updated.

HeroicDeath
Announces when players die to the entire server.

MultiVerse
THe administrative ability to create and destroy worlds within the server.

Essentials
Numerous enhancements to the game engine which are missing from the basic Minecraft server. Facilities such as the MOTD and /kit commands.

Permissions
Provides support for fine grained permissions (beyond /op and /deop) to most modern plug ins.

MagicCarpet
Provides a non hack server side way of flying, currently only available to administrators for "official business".