Torro-Softworks of Germany, develops viewer and converter for CAD.
CAD converter for hoops file format, easm, dxf, stl, ply, obj, off, pdf.
CAD Software for engineering professionals: Viewer and Manager for EASM, EPRT, HOOPS, PLY, OBJ, OFF, PDF, HPGL,DWG,DXF,DGN,CGM,CalsG4