Inflections for translation system



As part of an application I’m developing, I’ve build a translation
system (that I hope to release later) fitting my needs. However, I
wondered if it would be a good idea to use inflection rules to
pluralize translations.

Is it possible to have inflection rules for multiple languages in
parallel? I need at least french, dutch and english in the same
application at the same time.

Thanks for any hints.