JavascriptのInflectionライブラリ。
<html>
<head>
<title>Inflection</title>
<script src="../js/inflection.js" type="text/javascript"></script>
</head>
<body>
<script type="text/javascript">
document.write('<p>'+'project'.pluralize()+'<p>')
document.write('<p>'+'project'.pluralize().singularize()+'<p>')
</script>
</body>
</html>
便利。
デモ：Inflection