Yes, PowerCMS builder is included in Design Extender. It would allow you to create editable areas on your site that your customer could update directly without having to contact you.
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.