Calc 5: Online 3D Calculator

Andrew at the calc5 has announced Calc 5, an online calculator that plots graphs. With calc5 you can plot 2d and 3d graphs, make symbolic calculations such as derivation, browse 2d graphs same way as you browse map in your favorite mapping service with zooming and panning. The tool uses canvas (or canvas emulation), and you can travel around the graphs a la Google Maps.