Comment Maple (Score 1) 605
MAPLE is a powerful program for any math functions. It has awesome graphing capabilities, the only downside is the complex way in which one has to enter in the problem, and define what you want the solution to look like, but once one has the basic rules down they can do very complex mathimatic and physics calculations.
debatable if Maple is more powerful than Mathimatica, but it is close.