GCalc - The Free Online Graphing Calculator. In fact, it's not just online - you can download it as well. It's written in Java, so it's platform independent, but it's just the top of the iceberg... Features of GCalc:
Unlimited number of functions, many built-in functions, function list management, trigonometric/inverse functions, hyperbolic trigonometric/inverse functions
FAST (almost instant) graphing
Pre-programmed zooms and user-defined graph window
Customizeable graph features (axes, scales, grids)
Multi-color graphs
Tracing
Symbolic (exact) differentiation
Radian/Degree modes
Graph Window (so your screen shots are more Graph than GCalc), a big graph screen, status bar
GCalc - The Free Online Graphing Calculator. In fact, it's not just online - you can download it as well. It's written in Java, so it's platform independent, but it's just the top of the iceberg... Features of GCalc:
Winplot is a general-purpose plotting utility, which can draw (and animate) curves and surfaces presented in a variety of formats.
