Bukkit

QuestX gives you the power to create your own quests and roaming, interactable NPC's. Highly customisable with morale system.

API to add working snakes to Minecraft!

The Creepers have been at the sheep, shearing them will make them explode

PistonCrusher

Dive v1.0 - let your players breath underwater

A plugin that lets entities and players ride vehicles through portals

MagicWorld

Allows players to give themselves player heads.

Simple rename plugin for server owners to rename items with colour!

This plugin will make items and blocks previously uncraftable - CRAFTABLE! With Permissions!

This plugin allows you to break cobblestone between a piston and an obsidian block

Beer in Minecraft!

Bukkit plugin that can temporarily DeathBan players whose Factions power drops below a set threshold.

GamemodeSimple

Obby To Lava - A must-have for Skyblock servers!

UltraHardcore utilities

Get Rupees (Emeralds) and Hearts (Health) when mowing grass.

EasyMotdchanger

/setlocation and repeat to make a line of locations

Blacklist block placement and item crafting, per player and group!