Freeware Parabola Calculators
2D Parabola Calculator
Download the program and VB6 source code here
http://parabolacalculator.blogspot.com/p/2d-parabola-calculator.html
3D Parabola Calculator
Download the program and VB6 source code here
http://parabolacalculator.blogspot.com/p/blog-page.html