Hydro - Next generation high performance online-judge platform - 新一代高效强大的信息学在线测评系统 (a.k.a. vj5)

Popular Open Source Online Judge based on PHP/C /MySQL/Linux for ACM/ICPC and NOIP training, with easy installation. 开源OJ系统

Container to update DNS records periodically with WebUI for many DNS providers

XCPC/ICPC/CCPC 算法模板

Easy to Use ESP8266 & ESP32 DDNS Update Client Library.

一个简单的评测系统

Renewing No-IP hosts by browser automation

Command line tool to update DDNS: No-IP, DuckDNS and DynDNS hosts IP

An online judge system designed for OI training.

OI代码仓库、复习笔记、代码模板、本地Judger

Menci 的 OI 博客（源代码与网站文件）

下一代OIer/ACMer本地代码测评的简便环境 | Next-generation OIer/ACMer code native tiny code test environment

Auto Install for Ubuntu Server Iso with Auto installing Scripts with Programs Scripts Installs/Reinstall with Configs and Systemd service file

Real Cena Local Judge. By Liu Qishuai.

PiProxy: HTTP/HTTPS/HTTP2 Reverse Proxy with Cert mgmt, Compression, Security enforcement and Rate limiting

Life is short, judge locally. 适用于OJ练习的本地评测工具。开发版本：https://github.com/NoCLin/LocalJudge/tree/dev

All my solution for examination questions collection.

Simple client for the no-ip.com API for dynamic IP

常见算法的 C 11 实现片段，适用于算法竞赛

《洛谷深入浅出程序设计竞赛（基础篇）》