Bukkit

Survival 101 is a War plugin. Multiple gamemodes.

Empires

Transmute items based on experience points, and the desired item

SeizedDrugsJail

Manages universal currency to use across servers

An area protection mod that emulates the feudal system.

Druggies is a drug plugin for bukkit

NeverGreif

Reserve

WesLoans

Fuse materials with virtual particles to create other items!

A webbased shop für selling ingame items through the web.

Minecraft-Exchange

An amazing Plug-in, that has virtual ATM settings popping up on your screen easy access to all your money as well!

Bottle XP

A gaming experince that only an MMO has ever given you... in minecraft!

iRedstone

SuperSpleef

AntiDrop [Stop players in Creative mode dropping items for other players]

Catch Minecraft mobs using eggs.