I have used Nuklear in a medium sized hobby project, and it's kinda cool but I will be migrating away from it. I am not aware of it being used in shipped produc

I have used Nuklear in a medium sized hobby project, and it's kinda cool but I will be migrating away from it. I am not aware of it being used in shipped products, unlike Dear Imgui which is a more popular alternative. The first reason is that it doesn't have a good layout system requiring manually specifying positions and sizes in quite a few places and doesn't gracefully handle varying font sizes. My GUI code is littered with x*FONT_SIZE to do some kind of scaling to work on my low res 27" screen and a high res 13" laptop. I don't need it to do any magic behind the scenes with font sizes (such as moving from monitor to monitor), just allow setting the GUI font size to a reasonable value and sticking with it without manually specifying every row height. The motivation for this probably is that the author wanted to have extremely skinnable UI to be able to do fancy game UI's. However, if you look at a lot of modern game UIs they have a flat "material design" type of UI with flexbox-like layouts, and no fancy skinning, just flat colors and rounded corners. Another motivator is that Nuklear can run on triangle-based GPUs and pixel-pushing APIs. This is not valuable to me. The second reason is that it's buggy. The developers have taken to the extremes to avoid dependencies. This includes stuff like home-brewed implementation of printf. Which will hang in an infinite loop when you try to print a float that has INF value. With some hacking, I was able to make Nuklear use standard printf and some other standard library functions instead of the bundled implementations. I appreciate all the effort the developers have put into this, but it's not ready for prime time and expect to spend time fixing bugs if you'll use it. I'll probably be moving away from the immediate mode GUI paradigm as a whole (instead of using Dear Imgui or Nanogui), it's a poor fit for the application I'm developing. Recently I've been seeing a quite polished game UI toolkit used in several published games, like Rise of Industry and Space Haven. Does anyone know what this toolkit is? Something Unity offers or some proprietary library? On my spare time I've also worked on a retained mode flexbox-based UI layout and rendering library that integrates like Nuklear or Dear Imgui. In other words, the GUI library doesn't have any dependencies or have any side effects. You feed in a tree of GUI elements, the events coming from the windowing system and as output you get a vertex buffer and a list of triggered events. This concept shows some promise but unfortunately I don't seem to have the time it takes to turn this into a polished product. I'm happy to talk about it if anyone is interested.