Stockfish is a powerful open-source chess engine known for its high performance and accuracy. It uses advanced algorithms and artificial intelligence techniques to evaluate millions of possible moves in a matter of seconds, making it one of the strongest chess engines available. Developed by a community of programmers, Stockfish is compatible with various chess interfaces and platforms, allowing players to analyze games, practice, and compete against the engine. It is widely used by both amateur and professional chess players to improve their skills and strategies.