TracePro Standard + RayViz + IGES and STEP Reader/Writer: Standard edition of TracePro with optimization and STEP and IGES translators, plus the SOLIDWORKS Add-in RayViz.
TracePro Expert + RayViz + IGES and STEP Reader/Writer : Expert edition of TracePro with optimization and STEP and IGES translators, plus the SOLIDWORKS Add-in RayViz
TracePro LC: LC edition of TracePro (no optimization, no scripting language).