Open Source Chess Engine

Derived from Glaurung 2.1, Stockfish is a free open-source engine for Chess Games with support for Syzygy Bases. While it’s not a complete Chess Program per se (requires UCI compatible GUI in order to be used comfortably) it’s still worth checking out for anyone working on building a Chess game or app.

Crafty - Chess Engines

Stockfish 15.1 - official release version

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Chessnut Evo

Installing Arena Chess GUI and Stockfish 10 engine in Linux

CoreChess

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