WildCard Go! is a program to study go.
The website is http://sites.google.com/site/goboardproject/
The authors describe WildCard Go! as:
WildCard Go! is developed and distributed for documentation, study and education, play and review of Go game. With the traditional 19x19 board, the main program, GoBoard, has integrated all other subprograms like GoEngine Viewer and Goplayer, and enables user to review the stone move and its effects graphically. "Go Text Protocol" is applied as a basic communication, so any of external go engine using same function such as GNU Go can be basically interfaced and run together with WildCard Go!.