Physical and Theoretical
http://www.scm.com (Rank: 323452)
http://www.webmo.net/ (Rank: 388253)
http://www.arguslab.com/ (Rank: 550331)
http://mark.jelezniak.de/Chemked/ (Rank: 562223)
http://www.crystal.unito.it/ (Rank: 681837)
http://www.chemkin.com/ (Rank: 681905)
http://www.sg-chem.net/ (Rank: 713472)
http://www.teokem.lu.se/molcas/ (Rank: 912413)
http://www.conflex.us/ (Rank: 1065863)
http://gausssum.sourceforge.net/ (Rank: 1129096)
http://pyquante.sourceforge.net/ (Rank: 1148703)
http://www.tcm.phy.cam.ac.uk/castep/ (Rank: 1215601)
http://www.msg.ameslab.gov/GAMESS/GAMESS.html (Rank: 1264721)
http://www.bannedbygaussian.org/ (Rank: 1549813)
http://motofit.sourceforge.net (Rank: 1813360)
http://yaehmop.sourceforge.net/ (Rank: 1813360)
http://zeta-potential.sourceforge.net/ (Rank: 1813360)
http://www.almaden.ibm.com/st/computational_science/ck/ (Rank: 1837892)
http://gbelov.tripod.com (Rank: 1847490)
http://www.chem.yorku.ca/grad/SG/momix.htm (Rank: 2004558)