Nice presentation Josh! You are giving a nice solution for who wants a fast and reliable UI system for a desktop application. Mostly of time when we are building a desktop application we always gets a feelings as "my desktop application feels old" in compare with a electron application using a CSS3 and HTML5 benefits. But you get the point! Web applications can be beultyful and with Electron easy to use in multplatform, but... is not responsive as a real desktop application, not even in feel. A good, modern, multiplatform and extensible UI API for desktop could be a nice solution for alot softwares more the game Engines where for me be responsive and lite weigth is very important where you are working with expensive workloads. I am exciting to use your Ultra App Kit and replace my Hell abstraction layer in my desktop applications here.