In my personal opinion, Xfce is better maintained than either LXDE or LXQt. I’ve not seen very much, if any, discussion about either of them, except by individuals looking for a limited resource desktop environment. Unless your system is so old that it can barely run any desktop at all, you can use Xfce. If it’s too cumbersome or resource intensive, it may be better to drop down to a window manager. Most of them still support multiple windows accessible through either their task bar or menu functions, and there are many light resource file managers that can be used with window managers to provide simple directory and file access, similar to what you do with a desktop environment; only the consistency of a common environment and the “objects” by which information and complex structures can be copied and manipulated are “missing” in a simple window manager approach. Read about desktop environments for a more accurate and specific description of each desktop environment and window manager to determine the features and capabilities of each of them.
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