xlsclients ☆

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Description:
List client applications running on a display

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: x11 xorg debugging cli system-utility

Install: brew install xlsclients

About:
xlsclients is a command-line utility that reports the list of client applications currently running on an X11 display. It queries the X server to retrieve properties of connected clients, such as their command lines and window IDs. This tool is essential for system administrators and developers debugging X11 session issues or monitoring application activity.

Key Features:

Lists all active X11 client applications
Displays command-line arguments for each client
Shows window manager properties and IDs
Lightweight and fast

Use Cases:

Debugging X11 session startup issues
Auditing applications running in a graphical environment
Scripting automated checks for specific running X clients

Alternatives:

xwininfo – Focuses on individual window properties rather than listing all clients
ps – Lists system processes but lacks X11-specific window and property details

Version History

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