Inflector for pluralize and singularize English nouns
Inflector library which perform string transformation (singularization, pluralization, underscore, camel case, titelize, etc.)
A multilingual inflector that transforms words from singular to plural, underscore to camel case, and formats strings in various ways.
Doctrine Inflector is a small library that can perform string manipulations with regard to uppercase/lowercase and singular/plural forms of words.
Inflector converts words between their singular and plural forms (English only).
Inflector pluralizes and singularizes English nouns. It also contains some other useful methods.