The article discusses six best Ember.js product tour libraries, including Ember Intro.js, Ember Shepherd, Ember Tour, Ember Idx tour, Ember Bootstrap Tour, and Ember-site-tour. These libraries are useful for creating step-by-step onboarding tours in web applications built using the Ember.js framework. The article also provides installation instructions for each library. Additionally, it mentions that if developers do not want to build their own product tours, they can consider purchasing a no-code solution like Chameleon.