wxHelper, developed with wxPython.
https://wxhelper.sourceforge.io
Still beta, but it generated its own help file.
I couldn’t get wx.HtmlHelpHandler to work (bug?), so I wrote code to more or less replace it, available with the rest of the source.
I have updated the program, there was an issue that prevented the help file from showing correctly under windows. If you downloaded the previous version and had problems using it under windows, please give it another shot.
The whole problem lies in the different ways that Python under Windows or Linux accesses files inside a zip file.
Windows expects something like:
f"file:///{zip_path}#zip:{inside_path}"
Whereas for Linux it’s:
f"file:{zip_path}#zip:{inside_path}"
Just leaving this here in case someone has similar problems.