Bukkit

MagicLoot

CraftBook adds a number of original gameplay elements to Minecraft from integrated circuits to gates

bPermissions

HideStream

Gather spawners with silk touch enchanted tools. Provides the ability to change mob types.

A simple void world generator.

TNTRun minigame

PerWorldPlugins allows plugins to be set to hook onto certain worlds using the config.

A better way of storing items.

KitBattle

Check for multi-accounting players via IP-Address or Player Name

Prevention of hacks and other malicious tinkering on a Minecraft server.

Simple plugin to let you know the damage you just caused to a mob, and how much health it has left.

Nether Portals module for Multiverse-Core

Lobby

Protect your item frames, paintings, armor stands and leash knots! Very simple to use.

A small and simple plugin to allow players to sit on stairs or other blocks.

Jobs Reborn

SimpleClans

uSkyBlock