Science

Periodic Table
Freshney.org(Free)
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Periodic Table: A Free Science & Education Program for Windows
SigmaPlot
Systat(Trial version)
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SigmaPlot - A Fast and Efficient Scientific Graphical Software Package
Calculator 32bit
Bato(Free)
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Calculator 32bit: A Versatile and User-Friendly Calculator App
Mbox Viewer
Abreu Retto(Free)
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Efficient Mbox Viewer: Windows Science App Review
Free Jetico Scientific calculator
AlexJetico(Free)
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Free Jetico Scientific Calculator
ArgusLab
Arguslab(Free)
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Argus Laboratory - Modeling Chemical Systems Using Windows
ProfiCAD
Vaclav Jedlicka(Free)
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All About ProfiCAD
HEXelon MAX
Jerzy Znamirowsk(Free)
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HEXelon MAX: A Comprehensive Scientific Calculator with Unit and Currency Conversion
Teacher (Maths Edition)
Mega-Technology(Free)
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Teacher (Maths Edition) Review
Gears 3D Printer
Jaume Dellunde(Free)
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Gears 3D Printer: Generate 3D STL files of gears for real printing