Modern HTML/CSS uses the Flexbox layout system for simplicity and performance. Now you can use this easy-to-learn, powerful system directly for your UnityGUI layouts.
Fully integrated with Unity (works seamlessly with Unity’s uGUI/Anchors/Handles), working neatly with Unity’s ScrollRect and RectTransform, this is a drop-in replacement for LayoutGroup, ContentSizeFitter, LayoutElement and friends.
Comes with full source code. Comes with multiple demo-scenes showing how to configure in your own projects.
This asset uses GMP.net under MIT; see “3rd-Party licenses.txt” file in package for details.