Bukkit

Website based item market

Jobs

craftconomy

[Lite Version, Economy, Item Storage, Exp Storage, Highly Configurable]

Lucky Block Plugin

Kill an entity and earn rewards

A neat new way to create shops with easy to use GUIs and Interfaces

Make regions that players can buy/sell

Free donation alternative

Villages - Create your own Villages

ItemFrame Shop for Minecraft.

An updated way to earn money for slaying monsters

Towns can now require buildings that do stuff

AdvancedRegionMarket (ARM) allows you to sell, rent and manage WorldGuard regions

Let players buy items, commands etc. with Points

qQuests - The simplest yet most customizable questing plugin since uQuest!

Automated taxes and salaries

Allows players to get spawn eggs by throwing regular eggs at mobs.

Command-based community item sharing with anti-leech karma system

eBay for Minecraft!