Pandanet (originally and sometimes called IGS,[1] short for Internet Go Server), located in Tokyo, Japan, is a server that allows players of the game of Go to observe and play against others over the Internet. Started February 2, 1992, by Tim Casey, Chris Chisolm, and Mark Okada, working out of the University of New Mexico, and until April 5, 1993, continued at the University of California, Berkeley, and UC San Francisco (with an additional server at The Pasteur Institute, France), it was the first server of its kind.[2][3][4] After its initial inception some of its members helped to improve the server by writing software with a graphical interface; and thus IGS was born.[5] Pandanet hosts up to 3,000 players at a time, depending on the time of day.[citation needed] Its PC client's name is GoPanda.