Landing page plugin allows you to build a single page with configurable sections up to your needs and wishes. You can create highly configurable, smart and responsive sections as many as you need.
The landing page will be accessible on http://yourdomain.com/landingpage
There is a free demo version available with only one restriction - up to 3 sections will be visible on a landing page.
For documentation and details please refer to this link. You may also find a plugin for your older nopCommerce version there!