An open-source fanmade chart emulator for the rhythm game "Phigros".

Arcaea: Get that +6 every time | 进准爬梯工具w

总有傻逼关我在洛谷的完全隐私保护

kkksc03音源

The Wikipedia for HFLSers!

A command-line tool that makes git easier to use with GitHub.

A database for OIers

redirect problemset to contest in Codeforces

Generate regular expressions that match a set of strings

日本麻将助手：牌效+防守+记牌（支持雀魂、天凤）

This is probably the best web presentation tool so far!

Python - 100天从新手到大师

弹幕转换工具

极简论坛 - Deprecated because of ugly code

Wiki.js | A modern and powerful wiki app built on Node.js

Open source online judge based on Vue, Django and Docker. | 青岛大学开源 Online Judge | QQ群 496710125 | [email protected]