cosmogfx

I used this one in 2022 to make a proof of concept for a build once / run anywhere graphical app and IIRC the library was quite nice, even if a bit limited. The resulting kludge is at https://github.com/jacereda/cosmogfx and there's a prebuilt binary that should run on Linux, Windows and some BSDs. https://github.com/jacereda/cosmogfx/releases/download/v0.0.... Cosmopolitan Libc has since integrated the bits to make OpenGL work in cross-platform binaries and it's awesome.

There's also https://github.com/jacereda/cosmogfx We've been thinking about rekindling that effort at some point.

redbean has a https://redbean.dev/#LaunchBrowser function that lets you utilize the highest quality cross-platform gui that's already installed on the user's local machine. Think of it like Electron except with a 1mb install size rather than 100mb. I'm the author and I can tell you cosmo and redbean are ready to meet the needs of many use cases, and if they aren't then I want to know about it. We're also working to expand into OpenGL UX too. You can see our latest progress at https://github.com/jacereda/cosmogfx and the screenshots are here https://github.com/jart/cosmopolitan/issues/35#issuecomment-... which we're working hard to polish and get merged into the mainline. If you read threads like https://github.com/jart/cosmopolitan/issues/309 you can see we're committed to making sure your gui apps just work even on traditionally underser