Conversion software

Is there are general reference site listing programs which will
partially automate migrating documents from other formats?  I have
a largish nroff document to migrate and while I have some partial
tools for HTML, I'm just wondering if there might be a website
trying to stay abreast of this migration issue.

-- 
Gary Lawrence Murphy <> TeleDynamics Communications Inc
Business Innovations Through Open Source Systems: http://www.teledyn.com
"Computers are useless.  They can only give you answers."(Pablo Picasso)