WZGrapher Function Graphing and Math Program
Quick Function Graph Plotter with small footprint.
Additional features: numerical integration and derivation, numerical solution of ordinary differential equations (ODE) up to the fifth order. Scrolling and zooming the displayed range, copying graphs into other applications, saving your work as WZG files. The most important actions can even be done with Mouse Gestures. Built-in function calculator and numerical differential equation ( ODE ) solver which can generate value tables including the first derivative values.
Despite these and more features, the size of WZGrapher is just ~220 KB, download size 127 KB. Written in C language.