Created by Chris Welty. Lion is an Othello client to connect and play on the CGS server.

THe ODK source code is also available, which can connect your C Othello program to the GGS server in 15 minutes.

Note: GGS has moved to Please read here for more details.

Downloads: Lion, ODK Source Code


Created by Kevin Wong. Mimosa is a GUI client for the CGS.

Downloads: Mimosa

SGF File Format(FF[4])

The Smart Game Format, or SGF, is a popular file format used to store game records of board games for two players.

Download: SGF FF[4]