Shaun "Merthsoft" McFall and I are happy to present CALCnet Chat! v1.0, an IM, conferencing, and IRC program for TI graphing calculators. It takes advantages of the powerful CALCnet 2.2 networking protocol for TI graphing calculators and the Doors CS GUI API to offer a small yet powerful program. This 2KB program lets you chat with one, one dozen, or one thousand other users at once over CALCnet or globalCALCnet. It has already been used for conversations over 300 miles using gCn, demonstrating its versatility and power. With Chat!, you can chat over a simple unit-to-unit I/O cable for two calculators, or an only slightly more complex conglomeration of link cables for more than two. You can set (or change) your username and see a list of other users on the network. With globalCALCnet (gCn), Chat! can be linked into Internet Relay Chat (IRC), so that your TI-83+ or TI-84+ can chat on the internet. Download and enjoy! Doors CS 7.1.1 or higher required.