This is the first release of the DOTS UI system (https://forum.unity.com/threads/showcase-pure-dots-ui-system-detailed-description-feedback.688531). The source code is released under MIT license, so you can do anything you want with it. It's still very early development stage so don't be disappointed with lack of features and bugs. Remember, it started as a learning project and some parts of code are very ugly (strange class names, etc.). Link to the repository: https://github.com/supron54321/DotsUI I'd really like work full time on this project, but right now I can spend only 1-2 hours per day. That's why it took almost 2 months to publish this project, after my first post. I have rewritten the core from scratch a few times. Now I really like current design. It's fast, multithreaded and can be easily extended with new primitives and high-level controls. There is still A LOT of work to do before it will be production-ready. Check list of known issues and roadmap. Because of bugs in ConvertToEntity, the system is completely detached from this workflow and uses its own converters. In this version, the only "easy" way to work on UI is to convert Canvas hierarchy and prefabs through classes in DotsUI.Hybrid namespace. There is no high-level API for spawning pure UI Entities. I strongly recommend to convert unity prefabs to DotsUIPrefab and instantiate them form systems. Breaking changes in the core are pushed in almost every commit. Canvas render-mode must be set to "Screen-space camera". Conversion pipeline automatically adds a component to the camera (OnRenderImage hook). Design DotsUI is trying to convert UnityEngine.UI hierarchy to pure DOTS representation. Due to performance reasons, I removed rotation from RectTransform component. Scale will be implemented in future releases. The whole system is designed to achieve the best possible performance, but there is still room to make improvements (remove sync points, more jobs, and better data layout). Samples Documentation is not ready yet. You can check "PrefabExample" to learn how to create and instantiate DotsUI prefabs: https://github.com/supron54321/Dots...i.hybrid-samples/DotsUI.Samples/PrefabExample Contribution Right now I'm looking for the feedback. Share your thoughts about the idea of open source UI system. Once I finish the core, we can start with pull requests from the community.