Links

http://math.nist.gov/mcsd/savg/vis/dendrite/index.html
http://www.circs.neu.edu/members/alain.htm
http://www.rpi.edu/locker/56/000756/
http://quattro.me.uiuc.edu/~provatas/solid.html
http://www.math.mcgill.ca/xu/

Software

... rather old stuff, but still entertaining

Velocity Selection in two-dimensional Dendritic Growth by the Microscopic Solvability Condition