Smack is an Open Source XMPP (Jabber) client library for instant messaging and presence.
'jivesoftware:smackx:2.0.0'
<dependency>
<groupId>jivesoftware</groupId>
<artifactId>smackx</artifactId>
<version>2.0.0</version>
</dependency>
<dependency org="jivesoftware" name="smackx" rev="2.0.0"/>
"jivesoftware", "smackx", "2.0.0"