As the author of Number::Spell I figure I should put my 2 cents in.

When I created Number::Spell it was only after searching CPAN and posting a description of my idea to comp.lang.perl.modules. Nowhere in this process did I discover Lingua::EN::Nums2Words or any module that even touched on the problem.

Though Number::Spell is fairly basic as as far as options go; I have been working on a number of features including:

• multilanguage support
• support for ordinal vs cardinal numbers
• support (in English anyway) for optional "and" in the spelling at the apropriate spot (i.e. "five hundred thriry two" vs. "five hundred and thirty two")

Number::Spell already supports "European English" formatting of large numbers (i.e. 2e+11 is "twenty billion" in American English, but "twenty thousand million" in European English).