gulp-notify

gulp plugin to send messages based on Vinyl Files or Errors to Mac OS X, Linux or Windows using the node-notifier module. Fallbacks to Growl or simply logging

node-notifier

A Node.js module for sending notifications on native Mac, Windows (post and pre 8) and Linux (or Growl as fallback)

simple-notify

Simple Notify is a pure Javascript library to show nice and customizable alert notifications.