LXQt
LXQt is a lightweight, fast, and energy-efficient desktop environment for Linux and other Unix-like operating systems, built using the Qt toolkit. It is a successor to the LXDE project, combining its lightweight philosophy with modern Qt technologies to provide a user-friendly interface with low resource consumption. LXQt is designed to be modular, allowing users to customize components like the panel, window manager, and file manager to suit their needs.
Developers should learn or use LXQt when working on systems with limited hardware resources, such as older computers, embedded devices, or virtual machines, where performance and efficiency are critical. It is ideal for creating lightweight Linux distributions, developing applications for low-power environments, or optimizing desktop setups for speed and minimalism, as it reduces memory and CPU usage compared to heavier desktop environments like GNOME or KDE Plasma.