Six plays Hex, a game with very simple rules and deep tactical complexity. Two players, one with black and one with white pieces, alternate placing marks on a rhombic board of hexagonal cells. Black's goal is to connect the two opposite black sides of the board with black pieces. White's goal is to connect the white sides of the board with white pieces.
HO-CVS is a version control system based on MetaCVS. In addition to the features of MetaCVS, it features module level versioning, the ability to reference every version (since there is a tag after every commit, which is extremely useful but slow), complex versions like #v1.2.3 designed to carry information about the change, operation hooks, and a somewhat powerful log command.
CoMa provides a uniform configuration mechanism for items. CoMa is similar to autoconf, but without the auto part. It is intended to be used in component-based development where different software pieces are used in the context of more than one application or version of the same application. It provides a way to configure items and query or validate their configuration. At present, it works best with HO-CVS, but it can still work with pure CVS, albeit with some loss of convenience.