Directmath Software

Go To: http://tinyurl.com/ndo966t
The easiest way to do symbolic calculations

DirectMath is a mathematical word processor and easy to use front end to the Mathematica and Maxima computer algebra systems. DirectMath makes use of a powerful pattern matching system to anticipate the calculation you want to perform, so you don't have to learn a programming language or wade through menus to get your work done.

Computing integrals, solving differential equations, and performing a whole host of calculation tasks is as easy as selecting the thing you want to calculate and hitting enter or clicking and dragging to launch the calculation you want.
http://tinyurl.com/nxrdfnj