Simple address book developed in Ruby with micro framework Sinatra.
This small sample application does not use any database. Contacts are saved in XML files stored in folders named by letters.
This example was developed for study purposes for beginners in Ruby.
The application is very simple and easy to perform. Just run the console commands 'bundle install' and then 'ruby app.rb'. View the application in the browser at: 'http://localhost:4567'.