1)   GraphSight Junior 1.0
GraphSight Junior is an easy to use freeware handy 2D math-graphing program. It was originally designed to help students and teachers satisfy their day-after-day math plotting needs. It makes it easy to plot common Y(X) = F(X) graphs.

 2)   GraphSight 2.0.1
GraphSight is a feature-rich 2D math graphing utility with easy navigation, perfectly suited for use by high-school and college math students. The program is capable of plotting Cartesian, polar, table defined, as well as specialty graphs.