Developer's DescriptionBy Underground IMExchange messages using Java based client-server messaging system.Underground IM, the free Java Instant Messaging solution. Both a client and a server are available. Underground IM is open source software distributed free of charge under the terms of the GNU General Public License.Features:Easy to useCreated with JavaCross-platformSecure, uses AES to encrypt packetsMessage notification and message soundsHTML SupportFont / Colour selectionEmoticonsPersonal MessagesProfilesOnline StatusFriend ListsFile TransferOpen SourceFree