Bukkit

A simple and easy to configure plugin that lets you announce to the server when a new player joins for the very first time.

The Exploration-Friendly Teleportation Plugin

Random Spawn

CTF

New items, blocks, machines, energy system and more!

Greenhouses enable you to have local biomes with plant and mobs.

ReportRTS - Report Realtime Ticket System

The best custom crafting plugin out there

The PON-3 Gaming Pony Pack

Inventory Based GUI and NPC Trait for HyperConomy

DisableCraft

Power motd

Cars for minecraft!

Survive endless waves of zombie attacks!

a Simple and effective warnings system for bukkit servers.

FunnyGuilds is a fully customizable RPG plugin that allows you to create guilds

A feature-filled Hunger Games/Survival Games plugin

Randomized rewards for voting with Votifier!

A minimap without clientmod using Maps!

http://dev.bukkit.org/server-mods/infiniteplots/