RUI is really cool, but it is solving a different problem. It is immediate-mode, and it is focused on building a new toolkit. Async UI is more about re-exposing

RUI is really cool, but it is solving a different problem. It is immediate-mode, and it is focused on building a new toolkit. Async UI is more about re-exposing existing retained-mode toolkits in nice-to-use, Rust-friendly APIs. The cool thing is this: with some effort, it is probably possible to adapt the two library together to have a UI with RUI's rendering system and Async UI's APIs.