If you are on one of our newer cp.blacknight.com hosting plans you can see some e-commerce applications that you can install easily through the Application Vault. Depending on the type of hosting plan you can also install these programs manually by downloading the required files from the program vendors website.
Our older linux Direct Admin based plans have a similar tool called the Installatron that you can use if you are on our older system.
Some common e-commerce applications are:
ZenCart - lightweight but with a lot of features. Is one of the most commonly used on our shared hosting plans.
Magento - powerful but can use up a lot of resources and so may run a bit slow depending on your settings and shop size.