Download of GreenChess 9.1.8 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free application was developed to work on Mac OS X 10.7 or later.
The most popular versions of GreenChess for Mac are 4.1 and 2.2. GreenChess for Mac belongs to Games. The bundle identifier for GreenChess for Mac is GreenChess. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free Mac application is George Merchant, PhD.
From the developer:
Play a game of chess against GreenChess or Stockfish and view PGN databases.
You may want to check out more Mac applications, such as Simon, Mahjong Artifacts® or Zombie Quest - Mastermind the hexes!, which might be similar to GreenChess.