Webassist extensions work great in CC 2017 for me they worked installing them also with DMX extension manager, but if you want you can use this extension manager which I find more reliable.
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.