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...Read the documentation for your GUI of choice for information about how to use Stockfish with it. Stockfish is a 11-time winner of the Top Chess Engine Championship. Stockfish is open source (GPLv3 license). That means you can read the code, modify it, and contribute back. You can use Stockfish on your computer or on your iOS or Android device. So you can get world-class chess analysis, wherever you are. The Stockfish engine features two evaluation functions for chess, the classical evaluation based on handcrafted terms, and the NNUE evaluation based on efficiently updatable neural networks.
A console/text based chess program with XBoard/CECP and UCI API, available on all major platforms. You may need a graphical chess interface to use it. Please refer to README.md in the files section for installation instructions.
The last stable release is 2.2.0 and has been released on 13/04/2026.
Belofte 0.2.0 till 0.9.20 (c/c++): Xboard 1 & 2 (CECP) - Linux/Unix/(Windows)
Belofte 2.1.1 and up (c++11) : UCI and Xboard 2 - Linux/Windows/Mac/Android/...
For access to code, please...
A JavaScript game library to quickly develop board games for the web
Board2D.js is a JavaScript library that allows you to quickly develop 2D board games for the web. It is extremely easy to use and contains a very rich API.
Download the ZIP, and extract it to a folder. Inside it, the "lib" folder contains the javascript library file. You can include it in your projects as-is. For an example of how to use the library, you can find two mini samples of tic-tac-toe and chess in the examples directory.
There is no API manual currently, but if you use an...
Tonic is a graphical interface for playing chess on Internet Chess Servers (especially FICS). It is based on Jin's sourcecode. Read more about features and development at tonic-chess.blogspot.com and at http://kenai.com/projects/tonic
Free, no-signup chess diagram generator. Paste a FEN, customize the bo
ChessViewer is a free, modern, browser-based chess diagram editor. Set up any position via drag-and-drop or FEN, customize the board, and instantly export high-quality images (PNG, JPEG, SVG) for books, blogs, or videos. No installation or account required.