nopCommerce – is the open source .net based e-commerce solution.
nopCommerce is a fully customizable shopping cart. It's stable and highly usable. nopCommerce is an open source e-commerce solution that is ASP.NET 4.0 based with a MS SQL 2005 (or higher) backend databas. This easy-to-use shopping cart solution is uniquely suited for merchants that have outgrown existing systems. It has everything you need to get started in selling physical and digital goods over the internet.
nopCommerce can be up-and-running in just a few minutes. nopCommerce is developed to take full advantage of the latest technologies available. With its pluggable architecture, additional functionality and presentation elements can be dynamically added to the application at runtime.
nopCommerce offers unprecedented flexibility and control. Since it is open-source, nopCommerce’s source code is available free for download.