DevToolbox

Powerful Go AI powered by KataGo engine. Features real-time analysis, win-rate prediction, and multiple levels.

Online chess game with Stockfish WASM engine, supporting multiple difficulty levels and position analysis

Traditional Chinese Chess (Xiangqi) against intelligent AI

Play Gomoku against AI with various difficulty levels, runs locally in browser

Play Othello against AI, test your strategy with this classic board game

Play Checkers against AI, test your strategy with this classic game

Powerful Backgammon AI powered by GNU Backgammon WASM engine with world-class neural network evaluation

Professional online typing practice and speed test tool. Supports English/Chinese, multiple modes, and real-time accuracy statistics.