If you look at the category at the top of the page you will see that it is in the WebAssist PowerStore category.
Edit. It's look like the correct link is:
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.