Underground IM is a free, Java based Instant Messaging tool that provides both a client and a server.
Underground IM is a cross-platform utility capable of running on any operating system that comes with Java support (e.g. Mac OS X, Windows, Linux).
Here are some key features of "Underground IM":
· Secure, uses AES to encrypt packets
· Message notification and message sounds
· HTML Support
· Font / Color selection
· Personal Messages
· Online Status
· Friend Lists
· File Transfer
What's New in This Release: [ read full changelog ]
· Last color now loads for personal message chat box.
· You can now only have one open session. (Your account logged into one computer only)
· Added Group chat.
· Few other minor bug fixes.