SALOME is an open-source software that provides a generic platform for Pre- and Post-Processing for numerical simulation. SALOME can be used as standalone application for generation of CAD models, their preparation for numerical calculations and post-processing of the calculation results.
Also check my note regarding installing salome platform on Fedora if you have "Failed to narrow the root naming context" error.
http://powerpan.blogspot.com/2009/11/installing-salome-platfrom-on-fedora-12.html
Here's a representative screenshot :