I know I'll get lots of downvotes for mentioning MessWare, but I'll be releasing - very soon - an Excel version. It's a Perl programme that reads Excel files and produces first POD and, from that, HTML files (although you can do what you like with the POD files later). My proposal for a talk at the London Perl Workshop has been
and the code is working. All I really need is a web site (WIP) and to get some personal issues straight (nothing that will stop me speaking at the LPW). I wasn't intending to announce it just yet, but couldn't resist hijacking your post to do a little self-promotion!