Real Chess 3D is described as 'Play Chess in immersive 3D graphics. Challenge your friends to matches or play against the AI players in the best chess game. Real Chess 3D is one of the most realistic and enjoyable chess games available'. There are more than 25 games similar to Real Chess 3D for a variety of platforms, including Android, Windows, Linux, Online / Web-based and iPhone. The best alternative is Lichess, which is both free and Open Source. Other Real Chess 3D like games are Chess.com (Freemium), XBoard (Free, Open Source), PyChess (Free, Open Source) and JustChess (Free, Open Source).
Lichess is the most complete chess experience, with a simple interface that focuses on the game, a massive array of game related tools and a huge, worldwide community. The Lichess covenant: lichess.org will always be free.
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XBoard, also known as WinBoard on Microsoft operating systems, is a free graphical user interface client developed by Tim Mann that is compatible with various chess engines that support the Xboard Communication Protocol such as GNU Chess.
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Winboard works more as a graphic front-end for several different chess engines included with the game, as well as for several chess game modes. These include not only player vs player or human vs computer competitions, but also games played online and even by email.
Jin is an open source, cross platform, graphical client for chess servers, written in Java. Jin can run either as a standalone application (available at this website) or as an applet, directly from your browser (available at the chess server's website).