Connected Curriculum Project: Multivariable Calculus  
   Covers topics in multivarible calculus such as transformation of vectors, volume and torque in 3 dimensions, and directional derivatives.
   http://umastr1.math.umass.edu/~frankw/ccp/multiworld/topic.htm

Multivariable Calculus Applets  
   Features graphing gradients, parametric, and polar curves, matrix manipulation, and a tutorial on determinants.
   http://www.math.ucla.edu/~ronmiech/crew/eugene/java/

Kalid's Page on Flux, Curl, Grad, and Div  
   Definitions of flux, curl, drag and curl. Discussion of some thereoms relating to these topics.
   http://www.princeton.edu/~kazad/resources.htm

Multivariable Calculus Problems  
   Various calculus problems are solved and plotted on a 3D graph.
   http://www.ma.iup.edu/MathDept/Projects/CalcDEMma/veccalc/veccalc.html

Multivariate Calculus  
   Features problem sets for different topics. Includes a brief introduction to each topic. Uses pdf or dvi files.
   http://www.swarthmore.edu/NatSci/smaurer1/Math18H/multivarH.html

Java Microscope  
   An interactive JAVA microscope to visualize divergence and curl via zooming.
   http://www.eas.asu.edu/~asufc/microscope/

Multivariable Calculus Examples  
   An interactive tutorial of multivariable calculus. A lot of work with graphics. Requires the use of DPG programming to participate in the examples.
   http://www.dpgraph.com/MCExamples/MCExamples.html

Multivariable Calculus  
   Textbook by George Cain and James Herod. Chapters in PDF.
   http://www.math.gatech.edu/~cain/notes/calculus.html