resnap

Simple API for capturing and resetting Node's require() cache state

gulp-css-decache

Finds all url() statements in your CSS files and adds cachebusting parameters to them.

re-require-module

Replacement for node.js require that that always reads the required module again from disk. It actually automatically uncaches it before requiring it again for you. This allows changes to become live without restarting node. It is like a simple hot requir