Source code for the virtual worm project associated with the paper:

Palyanov A, Khayrulin S, Larson SD, Dibert A (2013) Towards a virtual
C. elegans: a framework for simulation and visualization of the
neuromuscular system in a 3D physical environment. In Silico Biol
11:137-47

is available here (clicking the zip button is one way to download):

http://github.com/openworm/CyberElegans

and more information including binary executables is available here:

http://openworm.googlecode.com