punycode
A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.
node-ipc
A nodejs module for local and remote Inter Process Communication (IPC), Neural Networking, and able to facilitate machine learning.
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.
tldts
Library to work against complex domain names, subdomains and URIs.