Originally Posted by bob315
Is there OSX software for making MOBI or PRC files?
There is software that starts from single file HTML (with images) or multi-file HTML as an OEB e-book (i.e. with an OPF metadata file). The original command line tool from MobiPocket, mobigen.exe, is for Windows but works under wine (at least with Linux), and now there is an open source version written in Perl. See html2mobi (a mobigen replacement written in Perl)
. Post #6 includes links to other threads with mobigen.exe information. Note that html2mobi is beta software, so you can help test it out.