Comparison of X Window System desktop environments

A desktop environment is a collection of software designed to give functionality and a certain look and feel to an operating system. This article applies to operating systems which are capable of running the X Window System, mostly Unix and Unix-like operating systems such as Linux, Minix, illumos, Solaris, AIX, FreeBSD and Mac OS X. Microsoft Windows is capable of running X applications through Windows Subsystem for Linux and third-party X servers like Cygwin/X, Exceed, or Xming.

Source: Wikipedia — Comparison of X Window System desktop environments (CC BY-SA 4.0)