Chatterbox for Windows is a very small (434 KB), portable & compact LAN instant messaging program that allows you to send messages with anyone on your network (so long as they have the program installed and they have the router's IP) Allows for an unlimited amount of connections (36 at once have been tested). The program allows you to change the language, allows you to change the programs colors. It also is much more intuitive and user friendly then previous versions, so a newer user will have no problems using the software, and an older user will have absolutely no problems adjusting to the newer versions of Chatterbox. It is designed for professional, home, and office users alike. Chatterbox's best feature, aside from the chat, is how compact it is. At 434 KB, it can fit on any USB flash drive, and can fit on even the smallest of smallest hard drive partitions.