Poximity is my far the best. Costs $15,000 for the source, plus a royalty
on each item sold. If you really need spell checking, it is worth it. I
saw some other spell checkers, but don't remember any names. Must be
around somewhere.
–John
You can get a library of words from Austin Code Works. They are not
hyphenated if I remember correctly. You'd need to write your own search
programs. The indexing logic in the C column TEXTSRCH program could be
helpful for that.