Texi2html is a Perl script that converts Texinfo to HTML.
Texi2html is now maintained by Patrice Dumas, and others. Texi2html home page.
Lionel Cons's Texi2html page has background and historical information. Lionel is the original author of the script.
As of version 4.0, the Texinfo distribution contains integrated support for HTML. That is, makeinfo will be able to output in that format. But does not (yet) have all the bells and whistles texi2html has accumulated over the years.
Contact.