@sun @6EQUJ5 @ruin What do you mean by "natively supported"? Multi-mouse to multi-cursor on X11 and some Wayland compositors is trivial, the usual roadblock was applications expecting a single global cursor and window managers asking philosophical questions about what it means to focus a window. Applications being multitouch touchscreen aware has improved the situation somewhat, and all the modern OS/DEs with the exception of macOS have adapted to the mouse+multitouch touchscreen paradigm.