htmldoc is a shell-based application that provides conversion of HTML in PDF, PostScript or indexed HTML files. This even works with remote files via HTTP.
htmldoc was written by Easy Software Products and is Open Source Software. This implies I only compiled it and built this installer package, but I'm not the author of this software.
The download archive contains htmldoc, compiled from the unmodifed sources, built as an installer package using Apple's “Package Maker” software.
The software's original website is www.htmldoc.org. It contains more info on the software and commercial support, as well as the source code.
System requirements
This package was created on Mac OS X 10.3.6. I assume (but haven't verified) that it works on 10.1 and 10.2 as well.