As it haves Rust's libc, can install XFCE/LXDE?

Any known Linux DE which can be installed in RedoxOS?

Redox OS doesn’t have an X server, so any desktops depending on it won’t work. It also doesn’t implement the display render manager interface of Linux, so Wayland based desktops won’t work either.

(This forum has pretty much no activity. https://redox-os.org/community/ lists other ways of communication.)

Its libc is aiming at posix compliance, so that shouldn’t be to much of an issue. As was already stated the main hassle is going to be porting an X server over. Though this will probably be best to wait tell redox is self hosting. Which in November Jeremy believe he was only a few months out from that.