Lybniz vs KAlgebra for graph visualization/plotting

In my work I sometimes need to quickly visualize a simple function, and software like Mathematica and Maxima seem to be a bit of overkill so I decided to try some simple plotting programs in Ubuntu from the SC.

The first, which I have evaluated before, is KAlgebra.  It's not too bad and has an upside in that it can also do calculations.  However, I don't really like the plot style.   This is an example for \( \sin^2 x \cos^2 x \).

So I typed in "graph" or "plot" in the SC and cam across the Lybniz graph plotting software.  It only plots  so it doesn't calculate like KAlgebra can and then show you a graph.  I like how Lybniz looks better than KAlgebra.  It doesn't have many options.  I wish you could thicken the line a bit, but it does let you zoom in better than KAlgebra.  Same example.