I'm using Dear ImGui for my cross-platform projects (which includes running in browsers): - https://floooh.github.io/visual6502remix/ https://floooh.github.io/

I'm using Dear ImGui for my cross-platform projects (which includes running in browsers): - https://floooh.github.io/visual6502remix/ https://floooh.github.io/visual6502remix/ - (start the emulators by clicking the little "UI" icon to get the debugger UI) https://floooh.github.io/tiny8bit/ https://floooh.github.io/tiny8bit/ - (start by clicking the little "UI" icon) https://floooh.github.io/sokol-html5/ https://floooh.github.io/sokol-html5/ Platform abstraction is handled through the sokol headers: https://github.com/floooh/sokol https://github.com/floooh/sokol Dear ImGui is small and fast enough for running in browsers (it will add up to a few hundred KBytes of WASM byte code). If this is too much "bloat", there are smaller, but also less powerful alternatives like microui: https://github.com/rxi/microui https://github.com/rxi/microui)