The software’s true strength lies in its modularity and technical precision. For field geophysicists, the montaj Geophysics extension provides essential filters, including 1D and 2D Fast Fourier Transforms (FFT), to isolate specific signal frequencies and clean up noise in magnetic and gravity data [11, 14]. These tools are critical for tasks like geophysics levelling , which corrects systematic errors in airborne surveys to ensure that the final maps reflect true geological features rather than sensor drift [21, 27].

Perhaps the cost or licensing barriers are too high. Fortunately, there are open-source and lower-cost alternatives for basic geophysics processing: