HIARCS Chess Explorer is described as 'World class chess database, analysis and playing software for PC and Mac' and is a Chess App in the Games category. There are more than 10 games similar to HIARCS Chess Explorer for a variety of platforms, including Windows, Mac, Online / Web-based, Android and iPhone. The best alternative is Lichess, which is both free and Open Source. Other HIARCS Chess Explorer like games are Scid vs. PC (Free, Open Source), Fritz (Paid), Chessmaster (Paid) and ChessRoots (Free).
Arena is a free Graphical User Interface (GUI) for chess. Arena helps you in analyzing and playing games as well as in testing chess engines. It runs on Linux or Windows. Arena is compatible to UCI and Winboard protocols.
Tarrasch is a flexible, minimalist, and easy to use chess GUI. It is ideal for playing against and training with chess engines. Tarrasch has a built in engine but can just as easily be used with other UCI engines such as Rybka or Houdini.
Battle vs. Chess is a computer game version of chess developed by Targem Games and Zuxxez Entertainment and published by TopWare Interactive. It was released on May 17, 2011 for PC (Windows and Mac), PlayStation 3, PlayStation Portable, Nintendo DS, Xbox 360 and Wii in Europe.
3D Super Chess offers a beautiful and customizable chess experience featuring both 2D and 3D environments. Play against a challenging virtual opponent or friends in PvP mode on the same Mac. Thanks to the rotating chessboard you'll always stay on top of things.