Chess computer programs for Windows - which ones are good?

Forget about those old free engines you've got lying around somewhere - they've just gotten way too weak.

Stockfish is free and brutally strong, runs perfectly on Windows, and gets updated regularly. If you want something with a GUI for casual play, check out Arena or ChessBase - they're more user-friendly.

For serious stuff, I'd combine Stockfish with a good interface like Lichess or a dedicated GUI.

If you want a bit more features than just the engine itself, I'd rather recommend ChessTempo or lichess to you - you get not just strong engines, but also a complete platform for playing and learning right away.

Stockfish is of course technically outstanding and free, but honestly most people need a GUI around it, and that's where it gets complicated again.

With a browser interface like that you can just start playing right away without having to install anything separate 😊

What often gets overlooked: if you really want to play and analyze a lot, it's worth paying attention to the user interface itself. Stockfish is incredibly strong, yeah, but the engine needs a GUI wrapped around it so you can actually work with it. The suggested solutions are spot on for that - Arena, ChessGUI, they work great. Only thing is: lots of people install it, then realize the interface just isn't as intuitive for regular training as they thought it would be.

From my experience, it comes down to what exactly you're planning to do. Are you mainly playing against the engine? Then one of the Arena variants combined with Stockfish is perfect and costs you nothing. But if you also want to play against real people and get quick analysis while you're at it, then the online platforms mentioned in the other answers are honestly more convenient - you've got everything in one system, don't need to install anything.

The often underestimated detail: trial or paid programs like Fritz or ChessBase have better engines built in from the start, but the free combinations are holding their own against them these days. What sometimes falls short, though, is analysis history - if you want to compare and track your games over weeks, a structured system still makes sense.

By the way, you can also use Stockfish directly in VS Code as an extension if you're working at your PC a lot anyway - saves you a separate GUI. What the previous answers haven't mentioned yet: try Lichess or Chess.com in your browser with their analysis feature, the controls are way more intuitive than some desktop programs, and the engines run just as strong. But if you really prefer a classic program, Arena is perfect - free, and you can load and compare multiple engines at the same time, which is really helpful for learning 🎯