LXQt: The Lightweight Qt Desktop Environment
LXQt is a desktop environment that is designed to be especially energy-efficient and suitable for older systems. It is based on the widget toolkit Qt and uses SDDM as its recommended/standard display manager. LXQt is available in stable since Stretch (Debian 9).
For developer, please see Teams/LXQtPackagingTeam for more information.
One could install LXQt on a fresh minimal system with apt. Depending on one's need this could be:
apt install lxqt-core
apt install lxqt
apt install task-lxqt-desktop
There will be live-iso's soon.