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)   HPGL Import for IntelliCAD 1.0
HPGL Import for IntelliCAD is a Hewlett Packard Graphics Language (HPGL) plot PLT file import plug-in for IntelliCAD powered applications. This plug-in gives IntelliCAD powered applications the ability to import geometric data from HPGL PLT files.