A recent email on the Medstats discussion group discussed software for structural equations models. Some of the packages mentioned were:
- AMOS, www.assess.com/Software/AMOS.htm
- EQS, www.mvsoft.com/
- LISREL, www.ssicentral.com/lisrel/index.html
- MPLUS, www.statmodel.com
- Mx, www.vcu.edu/mx/
You can find a lot of information about these software programs and about structural equations models, in general, at the SEMNET archives and the Ed Rigdon's SEMENT FAQ.