express-naked-redirect

expressNakedRedirect is a middleware for Express that redirects naked(root domain) request to www or its reverse.

follow-redirect-url

A simple command-line utility that lets you follow redirects to see where http URLs end up. Useful for shortened URLs.

punycode

A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.

subdomain-static

subdomain-static is a nodejs module help you redirect subdomain request to certain file folders