An online judge is an online system to test programs in programming contests. They are also used to practice for such contests like ICPC. The system can compile and execute your code, and test your code with pre-constructed data. Submitted code may be run with restrictions, including time limit, memory limit, security restriction, and so on. The output of the code will be captured by the system, and compared with the standard output. The system will then return the result.
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)
🔥 The most advanced open-source online code execution system in the world.
A modern open-source online judge and contest platform system.
⚡ The most advanced open-source automatic algorithm online judge system | 南京邮电大学开源 Online Judge | QQ群：668108264
Judging backend server for the DMOJ online judge.
✨ Simple, free and open-source online code editor.
A cross-platform online judge system based on Spring MVC framework and ActiveMQ.
The problem data (Test case generator, judge's solution, task, ...) of Library Checker
The online judge service with millions of submissions, since 2005.
PAT OJ exercises in C language 浙江大学PAT纯C语言题解。
Sandbox Server in REST / gRPC API. Based on Linux container technologies.
浙江大学PAT题解 https://pintia.cn
Jiangnan Online Judge
An open source online judge system base on Django REST framework and Vue.js !
Solutions collection of LeetCode submissions in JavaScript & TypeScript (LeetCode 解题集之 JavaScript & TypeScript 版)
LeetCode 算法解答
华东师范大学在线测评系统。https://acm.ecnu.edu.cn/ https://eoj.i64d.com/
A modern open-source online judge and contest platform system.