Integrated Simulation System for Soft Materials.

 OCTA

http://octa.jp/

 OCTA-BBS

Download OCTA (free version)
http://49.212.191.63/phpBB/

 PC-GAMESS/Firefly Download Site

You can use it on J-OCTA.
http://classic.chem.msu.su/gran/gamess/downloads.html

 RESP Download Site (Amber web site)

You can use it on J-OCTA.
http://ambermd.org/ftp/

 LAMMPS Web site

You can use it on J-OCTA.
http://lammps.sandia.gov/

 GROMACS Web site

You can use it on J-OCTA.
http://www.gromacs.org/

 Direct Force Field (Team Force Field)

http://www.aeontechnology.com/Product_DFF.php

 Gaussian Web site

http://www.gaussian.com/