Using the Stockfish Engine

Stockfish is a UCI engine, which means that it needs to be installed in a UCI-compatible GUI. Or, you may run it from the command line.

Windows

Popular chess GUIs for Windows include Fritz (paid) and Arena (free).

Mac

You can download Stockfish for Mac.

Linux

I don't know of many good chess GUIs for Linux. Run Stockfish from the Terminal by changing into the directory where the binary is stored and type ./stockfish (replace stockfish with the name of the binary).