Bovo - Bovo is a Gomoku-like game for two players, where the opponents alternate in placing their...
Lichess - The complete chess experience, play and compete in tournaments with friends others around the world.
Gomoku - Online Game Hall - This is the most powerful gomoku game on Mac App Store. For the game rule:
Chess.com - Play chess on Chess.
Jin - Jin is an open source, cross platform, graphical client for chess servers, written in Java.
Chessmaster - Chessmaster is a chess playing computer game series which is now owned and developed by Ubisoft.