ACIMS -- Arizona Center of Integrated Modeling & Simulation
Artificial Intelligence and Simulation Group. The page contains summaries of ACIMS simulation projects, simulation links, and news. One of the main research projects is the Discrete Event Specification Formalism (DEVS).
http://www.acims.arizona.edu/

Averill M. Law and Associates
Averill M. Law & Associates offers simulation consulting, simulation training, and the ExpertFit distribution-fitting software. It was founded in 1977.
http://www.averill-law.com/

Tau Simulation
Tau Simulation produces high performance simulation software for integrated circuit verification
http://www.tausim.com/

CADwalk
Process simulation, device simulation, and circuit simulation as services. Specialties include working with SiGe HEMT, HBT, and MOSFET.
http://www.cadwalk.de/

C++SIM
_your description goes here_
http://cxxsim.ncl.ac.uk/

Vicinities.com -
The Simulation Zone Users Forum has been created for individuals to effectively share simulation knowledge and information online. It contains links to important simulation sites.
http://www.communityzero.com/simzone/

Simulation Tools
A Collection of Modelling and Simulation Resources on the Internet for the simulation of both continuous-time dynamic systems and discrete-event ones. Provides a broad review with links to the software.
http://www.idsia.ch/~andrea/simtools.html

Industrial studies based on simulation
Simulation de flux pour l'aide à la décision de systèmes industriels et scientifiques
http://www.1point2.com

Simulation Software Survey
The survey is a representation of available simulation packages. Includes a lot of simulation packages, their characteristics and vendor contacts. A good source of information in the field of simulation software.
http://www.lionhrtpub.com/orms/surveys/Simulation/Simulation.html

Simulation Software – Simprocess & Simscript
SIMPROCESS simulation software facilitates innovative ways for organizations to test technological change while maximizing their existing investments. FREE DOWNLOADS.
http://www.caciasl.com