ForcePlot

One of the basic computer attributes is the high processing speed. As such, you are able to solve incredibly complex scientific expressions in less than a second. When it comes to math, most results can be visually represented and are widely used in construction. In this regard, ForePlot gives you the possibility to generate graphical representations of math equations.

Some degree of math knowledge required

The application is pretty lightweight, taking little space on your hard disk drive and eating up only a few system resources. Moreover, if you don't want to deploy it on your system, there's also the portable version you can keep on a USB Flash drive and use on the go.
Most requirements on your behalf are narrowed down to solid math and basic computer science knowledge. This is because the application comes with little documentation to get you up and running. There's an input field at your disposal, which you need to fill in with math equations written down in a specialized manner.

Simple and comprehensive representation

Although the design is pretty simple, the lack of a list of supported functions and expressions might make most look away. On the other hand, if the line written down is incorrect or invalid, you are notified, but there aren't any hints about how to get it right.
The rest of the space is taken up by the preview section, which generates the corresponding graphical representations in the blink of an eye. Using the mouse, you can drag the image around for easy navigation, or zoom in and out to observe the evolution of your expression.

Far from being a pro

Sadly, there aren't any options that let you insert data to process, so all expressions need to be written down manually. However, if you're satisfied with the result, you can save the graph to PNG with a transparent background.
Unfortunately, print jobs also fall in the hands of external utilities because of no such implemented feature. What's more, the output only consists of the graph itself, without the expression, which is a pain because it is displayed in the preview section, even in classic math representation.

A few last words

All things considered, we come to the conclusion that ForcePlot is not the best of its kind when it comes to math calculus and generating graphs. It's easy enough to use by anyone with little math and computer science knowledge, but simplicity also cuts out a great deal of practicality, especially because of the shallow export options.