FooPlot: An Easy to Use Online Graphing Tool

FooPlot is an online HTML5 graphing calculator that supports graphing of polynomial, trigonometric, and hyperbolic functions. It can also be used in plotting piecewise functions, parametric functions, and polar graphs.

Graphs created with FooPlot are considered as public domain files.  They can be exported as PDF, EPS, PNG, and SVG format. According to the author, embed codes will be provided soon.