OI 业界良心系列 简易的评测程序，秒杀cena（大雾

A simple judging environment for Olympiad in Informatics

this judge allows you to focus on choosing the best position to play chess game Just by write your code in BotNumOne or BotNumTwo

自动作文评分工具，支持中文、英文作文智能评分，支持评分模型自训练，支持WEKA处理模型数据，支持自定义评分算法。java开发。

Simple judge library and a judge environment.

GCETTS Judge

Restful API for code compilation and execution.基于restful的代码在线编译执行程序

A free and open source online judge system for programming courses

A Online Judge System For The ACM-ICPC/OI Contest

A pure judge tool based on QingdaoU Judger

The next generation judging system for Hydro (and vijos)

Easy universal code judger in Windows

一个判题沙箱；可根据判题数据，判定用户程序的运行结果以及获取用户程序运行时间和内存消耗、可隔离程序网络。

OI代码仓库、复习笔记、代码模板、本地Judger

陆战棋暗棋机器裁判

Judger for the future yaoj

⭐ A demo about OnlineJudge's JudgeServer and JudgeCore,they are based on TCP communication.

A very simple competitive programming judger in Rust. 🦀️

bdosn oj is an open source online judging platform for arranging online programming contest on a monthly basis for the youths of Bangladesh.

A lightweight, high-performance, universal program judger supporting multiple languages, special judge and SQL judge.