Some NPOs may also be a charity or service organization; they may be organized as a profit corporation or as a trust, a cooperative, or they exist informally. A very similar type of organization termed a supporting organization operates like a foundation, but they are more complicated to administer, hold more favorable tax status and are restricted in the public charities they support. Their mole is not to be successful in terms of wealth, but in terms of giving value to the groups of people they administer to.