Redox OS, an alternative operating system built on Rust with a microkernel, has recently gained support for X11, GTK 3, and Mesa3D EGL. This means that users can now run graphical applications from Linux without any hassle.
The support for X11 is made possible through the Orbital display server, which can emulate X11 in a similar way that XWayland does for Wayland. The performance is improved through DRI, but full GPU acceleration is not yet available.
In addition to X11 support, Redox OS also now supports GTK 3 and EGL, which means that interfaces will work faster and without any lag. In the future, this same stack is planned to be used for implementing Wayland.
Redox OS is built on the principle of a minimal kernel and everything else in the user space and under the sandbox. It has its own shell called ion, libc called relibc, editor called sodium, POSIX layer, package manager, and even daily builds for x86_64, ARM, and RISC-V.