Bukkit

Brings magic into the world of Minecraft with spells and items

PaperMail

Villagers can now repair your stuff!

100% secure chest based banking system using virtual chest inventories!

Combat NPCs for Bukkit!

SimpleSkins Reloaded

Money and Items for PvM and PvP

Modify player's speed according to their weight!

Finally a proper use for saddles!

A lightweight and highly functional guilds plugin.

Let players buy an XP boost! SkillAPI & McMMO support.

Have you ever imagined mailing items to your friends in Minecraft? ~Made by a brazilian to all world!

Allomancy from Mistborn in Minecraft

A plugin to load skins and other things

Chat using a radio on frequencies, limit local chat

WhoKilledMe

RPG style banking. Chests can be made into ItemBanks, which hold the same contents irrespective of location

Allows players to attempt to open locked chests and doors with a configurable "lockpick" item.

Castle Defence for SimpleClan

Ideal permissions/bans/rewards plugin for multiserver environments!