xlsclients

TLDR

List X clients

$ xlsclients

Show all windows

$ xlsclients -a

Long format

$ xlsclients -l

Specific display

$ xlsclients -display [:0]

SYNOPSIS

xlsclients [-a] [-l] [-display dpy] [options]

DESCRIPTION

xlsclients lists X clients. It shows running X apps.
Window listing. Running applications.
Display info. Which apps connected.
Debug tool. X11 troubleshooting.
Part of xorg-apps. Standard X tool.

PARAMETERS

-a

All screens.

-l

Long format.

-display DPY

X display.

-m MAXCMD

Max command length.

CAVEATS

X11 only. No Wayland. Limited info shown.

HISTORY

xlsclients is a standard X11 utility for listing client applications connected to an X server.