Several CAD programs seems to support export to HPGL (Hewlett Packard Graphics Language) mainly for the purposes of printing 2D graphics o HP printers. Some good software picks for this export / conversion are listed below, but you can most likely also find other programs with support of HPGL export.
Convert AutoCAD DXF Drawing Exchange Format to Hewlett Packard Graphics Language plot file.
We found 4 software records in the database related to .dxf to .hpgl file format conversion.
Microsoft Windows software - convert dxf to hpgl on Windows
An older CAD/PCB software
Convert from dxf file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned dxf to hpgl. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A 2D Design is drawing and design tool
Apple macOS / Mac OS X software - convert dxf to hpgl on OS X
A graphical tool for Apple Mac OS X
Multiplatform software - convert dxf to hpgl on any platform
A vector graphics editor