Microsoft has released a new scientific calculator that you can download for free (Windows only). Microsoft Mathematics 4.0 is a graphing calculator that plots in 2D and 3D. Of course, the calculator does many other functions such as solving inequalities, converting units of measure, and performing matrix and vector operations.
H/T to Center Networks.
Applications for Education
If you’re in a Windows 1:1 environment Microsoft Mathematics 4.0 could be a good alternative to purchasing expensive graphing calculators that you have to keep track of (I’ve previously mentioned the problem my school has with TI-83’s disappearing).