Bukkit

Modify items to your will!

DaylightSensorExpanded

Plugin to drop the head of a player or mob when killed.

FlyFeather

Add question and answer game to your server.

PreventDrops prevent item drop when no player is involved

TntDispenser++

Enables your citizens 2 NPCs to act as traders, buying and selling goods

Vertigo

Storages for your Boats and Minecarts

PistonStorage is a way for you to make cobblestone generators easier to use, by placing the cobble in a chest using a piston.

DiviningRod — the social compass

k1ll3z's Heroes skills

CustomCommandBuilder

Spy plugin

Ultimate Block Command

RadioTowers

This plugin adds ages to live through before entering the endgame and maybe even after that

This plugin is all what you need when your user needs a market

Teleportation with Books