Thank you for your post. I understand your worry.
I may sure you that dhtmlxSuite is not an abandoned product. We’re planning to release a new update this spring.
I apologize for the delay with the answer. Here is the updated info:
Regarding dhtmlxSuite we are going to release a completely new version of dhtmlxSuite with all UI components entirely updated in April. This new Suite 6.0 will not have a simple migration path from previous versions. dhtmlxSuite 6.0 will be much more modern, perfect for modern browsers and will provide smooth server-side integration with popular frameworks. Also it will be easy to install and customize.