Graph

As long as you have Java installed on your PC, you don't need to set up anything else. You can drop Graph's JAR file anywhere on the disk and just click it to run. Otherwise, you can save it to a removable storage unit to directly launch it on any machine with minimum effort.

Simple interface and options

The GUI is user-friendly, made from a single window with a plain and simple structure, where you can seamlessly insert math expressions and toggle between standard, polar and parametric mode.
The plot is quickly generated and you can zoom in and out, as well as reset it. Apart from the fact that you can add as many equations as you want, there are no other notable options provided by this piece of software.

Evaluation and conclusion

We haven't experienced any stability issues in our tests, thanks to the fact that Graph didn't hang, crash or display error dialogs. It had a good response time and minimal impact on computer performance, using low CPU and memory. Although Graph doesn't integrate rich features, it delivers a simple solution to plotting math functions.