Bukkit

Newspaper is the plugin to use to get information around your server as quickly as possible.

Credit Cards in Minecraft!

EpicEnchant

Flying With A Cost!

SimpleMoney Reloaded

The PON-3 Gaming Pony Pack

MobCash gives players money when they kill a mob

Teleman Portals

Currency plugin designed to be "nothing extra".

Trade with players or a global shop for dynamic prices, using commands or signs. Supports all economy plugins.

anti xray(x-ray)

This plugin is used to watch the chat of players, manage your worlds and more!

Rentable Advertising Signs

The ultimate questing plugin

Skyowallet is a lightweight economy which supports Vault and MySQL.

A very easy-to-configure item ban list, with default values for commonly-banned Tekkit items.

Finally a proper use for saddles!

Randomly-generated treasure hunts based on values you set and as often as you want.

A plugin to manager VIPs on your server

Gem Scoreboard