UPDATE Nov 10,2009:Convert your files online now @ onix-files.com We're live! yay!
Well.. I'm almost ready with completely downloadable/installable versions of my C# and PHP enabled onix components. I had a potential customer throw me for a loop with a file format I'd never parsed before - so I'm going to list the publishers/sources that I know I can handle very well (Eloquence for one), as well as have a form where you can submit your onix file, and try it out online (say, convert to a Excel or CSV or somesuch).
My Parsing is lightyears ahead of where it was, handling even the most atrocious XML. Yes, you heard me, no one in the publishing industry handles the XML for an ONIX file the same way. It's not their fault. Its just that XML is so darn easy to do wrong.
Additionally, I registered onix-files.com, to make it easy to find. I've had enough traffic related to this, that I believe there must be some real pain out there for developers trying to handle these files easily without having to build a parser from the ground up.
I am very excited. My goal is Nov 1st with full site and launch, but you can still contact me now about the components if you are interested. Email me.