Please choose the screenshots of your system:

Client on Windows

Main Window
Site Manager
main window site manager
Global Options
Queue Edit
global options queue edit

 

Server on Windows

Main window
Config Users
main window
Edit messages
Statistics

Client on Mac

Site Manager

 

Server on Mac

Main window

Client on Linux

Main Window (Metal L&F)

 

Server on Linux

Main Window (GTK L&F)

 

Even More...