redsolution/xabber classic

Open source XMPP (Jabber) client with multi-account support

Settings

Theme settings 
Appearance settings

Contact list 
Customize contact list appearance

Show avatars 
Shows users' avatars in contact list

Show offline contacts

Show groups 
Show groups in contact list

Group by account 
Group contacts in contact list by account

Active chats on top 
Display active chats on top of contact list

Duplicate active chats 
Active chats appear both on top of contact list and in home groups

Show empty groups 
Show groups with no online contacts 

Sort contacts 
Allows to set contacts order

By status

Alphabetically

Notifications 
Notification settings

Audio alert 
Choose notification sound

Vibrate 
Vibrate on notification

Light indication 
Blink LED on notification

Connection settings 
Connection settings

Clear cache 
Clear all local data. This can free some space.