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KaTrain - Improve your go by training with KataGo.
Lichess - The complete chess experience, play and compete in tournaments with friends others around the world.
OGS - Play go/weiqi/baduk online
Chess.com - Play chess on Chess.
SmartGo - Software for the game of Go, with apps for iPhone, iPad, Mac, and Windows.
Chessmaster - Chessmaster is a chess playing computer game series which is now owned and developed by Ubisoft.