Math and geometry software to create instructional videos I am looking into starting an amateur project for online tutoring. I need a math/geometry program that I can use to create shapes, graph functions, and create animation. I know of many types of software (such as geogebra) but they have restrictions for commercial use. In other words, I can't use the material or features (even screenshots) to gain a profit. Does anyone know of any programs/ software that I can use for my project?
Note: I don't mind software or programs that I can purchase for a one time fee.

1) Contact the geogebra support people; there may be some provision to pay a fee for the right to distribute-for-profit screenshots or animations produced. 
2) See if Mathematica meets your needs -- but this is not a cheap solution, the commercial cost is about $2500. However, Mathematica is a truly professional, well-made tool and the time it saves you might be worth the cost.
PS- Don't be biased by lack of features in Wolfram Alpha:  That is emphatically not like the full-blown Mathematica.
