Bukkit

Create your own Minigames to play

Xp Bank

sharemarket is a plugin for trading with stocks like a broker

Minetopia ATM plugin

Optional charge players when the change a spawner via SilkSpawners with Vault

Saga is a combination of settlement, faction and role-playing mechanics rolled into one.

Command iConomy

Marriage

Ever wanted to give Christmas Presents to your server members? Well here is the plugin!

Full automated lot/rent/protection plugin

The Slot Machine Plugin for All!

A very unique spleef plugin

worldguard-based plot buy/sell system

LimitDrops

Run Custom Commands on Votes! Now with “Lucky Votes” configurable chance to get extras!

Currency plugin designed to be "nothing extra".

Create your own Coupons

Highly configurable auction plugin. Will eventually support other forms of buying/selling/trading

MagicSigns

Easily get the price of all the items by just setting the price of 'raw' items.