Bukkit

Names Items and Blocks!

Shielder is a simple plugin that makes new players invulnerable to PVP for 30 minutes when they first join the server.

EffectCommands

An elegant way to Deal multiple commands.

Allows you to transfer XP into in-game currency!

Fly in survival: Allows highly configurable, creative-like flying in survival, that can optionally drain players' hunger.

MinigamesLib: OneInTheChamber

A plugin to give players golden apple effects on kill!

CarePack

Rubine - virtual and physical currency combined in one plugin

Autojump on to blocks just by moving against them

This plugin shows the staff of the server with a single command.

An addon for LockSecurity (http://dev.bukkit.org/bukkit-plugins/lock-security/) that allows for collection chests

Change your gamemode easily.

Ban game items from use and craft, globally or separated by worlds!

Hunger Keeper

Plugin that lists all players online and can mark players as afk incase they request.

Dynamic beacon range depending on blocks in the pyramid

It lets you change a player's damage!

Minecart Mania like, but updated!