GNU_Go
GNU Go
Free software program that plays Go with the user
GNU Go is a free software program by the Free Software Foundation that plays Go. Its source code is quite portable, and can be easily compiled for Linux, as well as other Unix-like systems, Microsoft Windows and macOS; ports exist for other platforms.
The program plays Go against the user, at about 5 to 7 kyu strength on the 9×9 board. Multiple board sizes are supported, from 5×5 to 19×19.