This Web Application is a basic clone of online listing services like Amazon, where users can sign-up to view listings, pose item Listings for sale and leave a review for an item.

The primary features of Ruby on Rails to build this web app is:

* Using 3 different models which are associated.
* Using different controllers for corresponding actions
* Validations of user input
* Authentication via Bcrypt
* controlling sessions via seesions#controller
* Basic Authorizations
* Filters and helper methods
* Partial Forms deployed to help make code less chunky to be
  more manageable.