FlexBuilder 2023 (Flexbox/CSS-3 UI)

Discord: [F4U]

Support forum: http://forum.unity.com/[Flexbox]

Getting Started guide: https://docs.flexbuilder.ninja/

Main site: https://flexbuilder.ninja

Fully supported: Unity-2022, Unity-2021, Unity-2020, Unity-2019

Fully supported once LTS: Unity-2023 (partially supported while Unity-2023 still in beta)

* Fully integrated with UnityUI, giving the best of all worlds: performance, ease-of-use, seamless integration with Unity APIs

* Compare with UIToolkit and UnityUI: https://flexbuilder.ninja/features-comparison/

* Allows "Responsive Design": smart layouts that change automatically across mobile, web, desktop

* Easy migration/upgrade path to UIToolkit in future (both are compatible with Flexbox)

* In-inspector preview + scene-view previews for live WYSIWYG UI editing

Support:

* 300 page manual with complete API docs: http://docs.flexbuilder.ninja/

* Online help/support via Discord - https://discord.com/invite/4AkrDgu

Bonus features:

* High-performance layout without having to re-write for UIToolkit

* FIXES Unity's core-Text layout: always good, always correct, without thinking about it

* FIXES: Unity Scrollviews: makes them intelligently auto-resize to handle dynamic content

* A CSS rendering engine, but with the tools to edit and debug your UI directly inside the Editor

* Pre-integrated with: ScrollRect, Button, Text, Image, RawImage, InputField, Slider, etc