Scanned PDF manual that contains a full HPGL reference
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
A Node.js library to communicate with HPGL-compatible plotters and printers.
GNU tool to convert HPGL into other vector and raster formats. Can also be used as a previewing in X11
HTML-based HPGL Reference