Tango

cpstest is a web-based tool for testing mouse click speed, evaluating concentration, measuring reaction speed, and providing fun, focused training.

A Flutter-based goal management app that makes every target crystal clear.

Web-based Tetris game supporting both mobile touch controls and PC keyboard operation.

Open source composite font blending JetBrains Mono and Maple Mono, with a perfect 2:1 Chinese-English width ratio, neat, elegant, and ultra-readable.

Web-based Sudoku game: just open the website to start playing.

自动识别公开牌面、追踪剩余牌，支持斗地主、跑得快、掼蛋，提供 iOS 与 Android 版本。