punycode

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

domain-browser

Node's domain module for the web browser. This is merely an evented try...catch with the same API as node, nothing more.

punycode.js

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