These Simulators have been written by Klaus Maier (as part of writing his master thesis with KGI) … a slightly modified form of them is distributed with the SBW installers for Linux and OS X.

The simulators included are Chemical Langevin, CVODE, Gibson NRM, Gillespie DM, Gillespie FRM, and LSODA.

Klaus' Simulators are NOT installed with SBW. It can be downloaded from here

Klaus' Simulators are fully supported on Windows, Mac OS X, and Linux.