Similar Commands to LOFT and SURFSCULPT

My company is migrating to Draftsight and we frequently use a LISP routine which uses the "loft" and "surfsculpt" commands from AutoCAD to draw 3D shapes.

These commands don't seem to be recognized in Draftsight. Are there any aternative 3D commands (or add ins) I can use instead of these?

Thank you.