Haiku OS, maybe? It is under active development. https://www.haiku-os.org/ https://www.haiku-os.org/ But a key problem with alternative OSes is that if you wan

Haiku OS, maybe? It is under active development. https://www.haiku-os.org/ https://www.haiku-os.org/ But a key problem with alternative OSes is that if you want to use them as daily drivers, your software choices may be limited or nonexistent. Haiku, for instance, has a WebKit-based browser, but no Firefox, Chrome/Chromium, or Safari.