The website of Walter Milner
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Descartes
This is a Windows application which draws graphs of functions. If you want something which draws 'ordinary graphs', use this. Descartes download is here
Argand
Argand is a Windows application which handles complex functions. It displays the real and imaginary parts of functions, and mappings of those functions from the z to the w plane. It also does contour integrals. Download Argand here
Gauss
This is a Windows application which draws graphs of functions of 2 variables. This produces lines and surfaces in 3d space, such as the helical tube you can see on the right. Gauss download is here
IT training materials
Powerpoint and Word documents about a range of technologies are available for download. These include material on HTML, CSS, Javascript, C, Java, Visual Basic, SQL and database theory. Follow this link