1)   HPGL Export for SolidWorks 1.0
HPGL Export for SolidWorks is a HPGL plot file export add-in for SolidWorks. This add-in gives SolidWorks the ability to export geometric data from SolidWorks drawings to HPGL Plot (PLT) files.

 2)   PLT Import for AutoCAD 1.0
PLT Import for AutoCAD is a HPGL Plot (.plt) file import plug-in for AutoCAD®. This plug-in gives AutoCAD the ability to import geometric data from ASCII and Binary PLT files.

 3)   PLT Import for SolidWorks 1.0
PLT Import for SolidWorks is a HPGL Plot (.plt) file import add-in for SolidWorks®. This add-in gives SolidWorks the ability to import geometric data from PLT files.