3D ACIS model files (.sat) and IGES ASCII CAD files (.iges, .igs) are one of the most common CAD formats and as such supported in almost all CAD/3D modeling software which could then be used to convert one to another. Such sat to igs conversion is typically used for interchange purposes.
Open SAT file Open IGS fileA CAD viewer program with conversion capabilities
A set of 3D modeling tools
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