Science

TinyCAD
tinycad(Free)
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Advantages of Using TinyCAD
Gears 3D Printer
Jaume Dellunde(Free)
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Gears 3D Printer: Generate 3D STL files of gears for real printing
Celestia
Shatters(Free)
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Real-time space exploration on your computer
Math Calculator
Graphnow(Trial version)
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Useful Math Calculators
Derive
Derive-europe(Trial version)
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Derive 6 - European Software
Anatomy Essentials
Improvisionapps‬(Free)
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Planet Genesis 2
Raptor Claw Entertainment‬(Trial version)
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Discover the Universe with Planet Genesis 2
Octave
Octave(Free)
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Writing Articles in Octave Using gnu Octave Signal Package
Symyx Draw
Symyx Technologies, Inc.(Free)
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Symyx Draw - A Tool That Matches Your Needs
MaxStat Lite
MaxStat(Free)
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MaxStat Lite: Easy Statistics Software