3rd party (minimal) Qt software. Useful for LXQt but not part of official upstream.

ARandR is designed to provide a simple visual front end for XRandR. Relative
monitor positions are shown graphically and can be changed in a drag-and-drop
way.

Image viewer for X11/Wayland

jgmenu is a simple X11 menu intended to be used with tint2 and openbox.

A window switcher, run dialog and dmenu replacement

A rofi plugin that uses libqalculate's qalc to parse natural language input and provide results.

Since this uses libqalculate's amazing qalc you can try natural language queries such 500 + 25% or 5000 EUR to USD or 150 to hex. It can also solve linear equations on the fly. Try 60x + 30 = 50, for instance.

tint2 is a simple panel/taskbar made for modern X window managers.

Xtermset allows you to change the characteristics of an xterm window
from the command line. Most options have the same names as those that
you would give an xterm at startup.

Like X11:XOrg, just with more Wayland

Grab images from a Wayland compositor

A lightweight Wayland notification daemon