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David Meredith (1942 - 2012) Calculus Calculator X(Plore)

Richard Parris (1945 - 2012)  Winplot Wingeometry

• Sage
• Sage Edu 5
• Rob Beezer (University of Puget Sound)
• A First Course in Linear Algebra
• Harald Schilly
• "the .knowl.html".
• The American Institute of Mathematics (AIM)
• Geogebra
• Paul Seeburger (Monroe Community College) 
• CalcPlot3D Exploration Applet
  
• Dynamic Visualization Tools for Multivariable Calculus (NSF)