Life is Feudal: Your Own

Lightweight, efficient Markdown editor

Play retro emulator games for free online, including NES (FC), SNES (SFC), Sega Genesis (MD), Neo Geo, GB, GBA, N64, PS1/PSX and arcade classics! Access the best retro game collection with no downloads required.

A note-taking app crafted for highly efficient users, combining full Markdown support with a sleek modern interface for a smooth, productive note-taking experience.

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

Simple online tests for reaction time, memory, and focus

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。