GraphCalc

Geared toward math students and teachers alike, GraphCalc is an advanced software application designed for statistical analysis. It lets you insert and plot equations, print the output, use an equation solver, and explore a script library, among other features.

After a speedy setup operation that shouldn't give you any trouble, you are greeted by a user-friendly interface that, although it doesn't contain stunning graphical elements, it's quite easy to navigate, thanks to its clear-cut structure.

You can use a scientific calculator and enter equations, make base conversions, insert trigonometric functions along with common and natural logarithms, use root and power, as well as inspect catalogs with mathematical operators and predefined commands that can be seamlessly added to the plot.

GraphCalc enables you to input up to ten equations. It generates 2D and 3D graphs, offering support for Euclidean, polar and parametric coordinates. You can edit the view and t range, customize plot styles and colors, zoom in and out of the graph, copy it to the Clipboard as an image, or save it as a bitmap file. The output documentation can be saved to RTF format.

The software program is equipped with a wide range of analysis tools for 2D graphs, which are able to find areas, trace and evaluate the graph, draw tangent lines, measure distances, adjust an n-slider, and so on.

The equation solver requires that you simply input an expression and initial guess to compile results. Meanwhile, the script library is filled with functions for defining an area, surface area, volume, circle attributes, and quadratic equations.

We haven't come across any stability issues in our tests, thanks to the fact that the utility didn't hang, crash or prompt error messages. It left a small footprint on system resources, running on low CPU and RAM, so it didn't hamper the overall performance of the machine.

To sum it up, GraphCalc proves to be a reliable statistical analysis application that comes loaded with a surprisingly rich set of tools and settings for inputting equations, generating 2D and 3D graphs, and saving data to file. Plus, it's freeware. Unfortunately, it hasn't been updated for a long time, and its interface needs some improvements in the graphical department.