vondele

matetrack

Track the evolution of Stockfish mate finding effectiveness

chessgraph

A utility to create a graph of moves from a specified chess position.

Stockfish

UCI chess engine

cdbexplore

Explore and extend the Chess Cloud Database (https://chessdb.cn/queryc_en/). Builds a search tree for a given position (FEN/EPD).

nevergrad4sf

Optimize stockfish parameters using nevergrad

fastpopular

Quickly extract the most common positions from a collection of PGNs

cp2k

Quantum chemistry and solid state physics software package

FishTestWatch

watch tests running on fishtest

lc0-data-converter

For converting training data from lc0 -> stockfish nnue

4ku

A UCI compatible chess engine that fits into 4,096 bytes.

ana-opening-book

books

Chess books used to develop Stockfish

c-chess-cli

Command Line Interface for UCI Chess engines written in C

chess-library

A chess library for C++.

cutechess

Cute Chess is a graphical user interface, command-line interface and a library for playing chess.

dbcsr

DBCSR: Distributed Block Compressed Sparse Row matrix library

external-engine

Using engines running outside of the browser on https://lichess.org/analysis

fast-chess

fast-chess is a command-line tool to run engine vs engine matches in chess.

fishtest

Stockfish testing

gcc

leela-chess

A chess adaption of GCP's Leela Zero

narrator

David Attenborough narrates your life

networks

Evaluation networks for Stockfish

nnue-pytorch

NNUE (Chess evaluation) trainer in Pytorch

phoronix-test-suite

The Phoronix Test Suite open-source, cross-platform automated testing/benchmarking software.

schildkroete

ein Schachprogramm

sshservice-cli

static-cutechess-cli

tb

WDL_model

Fit a chess Win-Draw-Loss model from played games