CAD files in ISO STEP format (.step, .stp) can be generally exported and saved into many other CAD formats, including the X_T format featured in Parasolid. Such step to x_t conversion should be possible in several CAD programs or conversion utilities without any problems.
Open STEP file Open X_T fileA set of 3D modeling tools
A 3D product data optimalization software
A CAD conversion software
A CAD visualizaton, analyzation and translating system
A CAD/CAM software used to create 3D models
A suite of CAD applications