Bukkit

VSkills

SP-Clans

Adds school classes to your server

Buy Zombie and Skeleton horses with economy

Beacon of Lightning

Free shop/seller plugin with all minecraft items support

The made-up language chat plugin

MassiveCraft Factions add-on

CrashRock

In Time Based Per world Economy Plugin(other economies can be run)

CustomVillagers is a plugin that let you make custom Villagers.

Garry's Mod Murder put into Minecraft!

HealthTC

Paint the terrain

Makes EXP more Intresting with serveral Features that costs EXP. English & German Defaults

RoomyChat is a plugin for Minecraft that allows you to customize how people talk to each other on your server.

A new jail plugin which consists of one or more cells where players are randomly put into when jailed.

Catapult Stick allows you to launch blocks and creatures as if they were fired from a catapult using a "catapult stick"

Lore is an administrator friendly plugin to setup and give a predefined book at first login.

SimplePeace