With the nature of shared hosting you are sharing hardware and bandwidth resources with others. To maintain a high level of quality and a consistent level of performance for everyone on the server, we simply must restrict usage on a per account basis. 1 client abusing an unlimited plan could affect everyone on the server, and we simply do not want this to happen.
All of our Canadian Web Hosting plans come with an easy to use cPanel control panel and the Softaculous script installer (with over 200 pre-loaded scripts). Try the cPanel Demo on the cPanel website, or view more information on the Softaculous script installer.