TweenUI is a web-based application designed to make it easy to create interactive, user-friendly interfaces. It allows users to customize the look and feel of their web-based projects using HTML, CSS, and JavaScript. With TweenUI, users can create everything from simple menus and buttons to complex animations and interactive charts. The user interface is designed to be intuitive, making it easy for users to create their own custom user experience. The software is also optimized for mobile devices, so users can design for a range of platforms. Additionally, TweenUI is compatible with multiple frameworks, allowing users to integrate with other services and APIs.
Suspended since November 2015 Edge Reflow (preview), Edge Inspect and Edge Animate are no longer under active development: https://blogs.adobe.com/edge/2015/11/30/update-about-edge-tools-services/