It is a blog application which is used to create blogs by user. It has an editor similar to medium and it also has login/signup feature.
It is a Quiz application which has all the features such as mcqs,scoring system, show/hide password, profiling etc. This is a great project for beginners in ruby on rails.
it is an eCommerce web application for Stores which has add to cart,checkout page,authentication etc. It is a complete eCommerce solutions for modern eCommerce web applications.