CivSim
CivSim is a plugin developed by Metriximor, with the general idea for the concept being spurred on by StarCitizen's Quanta economic universe simulation.
The main goal of civsim is to create a dynamic economy that players can engage with, be a part of and ultimately influence.
How it works
Players setup stores with ItemExchange just like they are used to. And they also set up CivSim's custom factories, which always take inputs and outputs, and hire workers. The workers must be paid in some sort of configurable wages, and those wages are then spent by the workers on products that are both necessary for their survival (like food) or for their satisfaction (books, tools, etc). These purchases are done straight from the shops that players set up.
Currently
A mineshaft block exists. Every 5 minutes it tries to hire workers, and when it does, it pays the workers who immediatelly try to buy 10 bread. The mineshaft will produce 10 raw iron for every worker it has hired, up to a maximum of 100 workers.