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Number::Spell Perl extension for spelling out numbers http://search.cpan.org/~lhoward/Number-Spell-0.04/Spell.pm

Lingua::EN::Numericalize Replaces English descriptions of numbers with numerals http://search.cpan.org/~ecalder/Lingua-EN-Numericalize-1.52/Numericalize.pm

Lingua::EN::WordsToNumbers convert numbers written in English to actual numbers http://search.cpan.org/~joey/Lingua-EN-Words2Nums-0.14/Words2Nums.pm http://search.cpan.org/~emartin/Lingua-EN-WordsToNumbers-0.11/lib/Lingua/EN/WordsToNumbers.pm