1)   DPlot 2.0.4.1 Graphing software for scientists, engineers, and students. It features multiple scaling types, including linear, logarithmic, and probability scales, as well as several special purpose XY graphs and contour plots of 3D data. 2)   Atoms, Symbols and Equations 4.0 Unique interactive multimedia Chemistry teaching software that tests students as they learn. Topics include: elements, atoms and molecules, word equations, chemical symbols, Periodic Table, chemical formulas, balancing chemical equations.