# zhblue/hustoj

Popular Simple Open Source Online Judge based on PHP/C++/MySQL/Linux  for ACM/ICPC and NOIP training, with easy installation. 简单实用的开源OJ系统

Repository: https://github.com/zhblue/hustoj
Canonical: https://ross.abutalabs.com/products/hustoj
Homepage: http://www.hustoj.com/?cat=2
Language: JavaScript
License: GPL-2.0
License Family: copyleft
Topics: acm-icpc, noip, oj, online, judge, onlinejudge, php, mysql, java, c, cpp, online-judge
Last push: 2026-08-19T08:57:19+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 98, longevity 100
- inputs: {"age_days": 4914, "days_push": 14, "days_rel": 14, "gap_med": 10, "n_releases_24m": 28}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3782, forks 835 (observed 2026-08-28T04:08:18.493910+00:00)

## What it is
HUSTOJ is a popular open-source online judge system for competitive programming training (ACM/ICPC, NOIP), built with PHP, C++, and MySQL on Linux. It supports automatic code judging, problem sets, contests, multiple UI themes, and easy installation via scripts or Docker.

## Use cases
- host an online judge for competitive programming training
- run ACM/ICPC practice contests for students
- set up a NOIP training platform for a school
- auto-grade programming assignments
- self-host a coding contest platform
- run multiple isolated OJ instances with SaaS mode

## When to choose
- you need a battle-tested, easy-to-install online judge on Linux
- you want ACM/ICPC or NOIP style training with a large free problem bank
- you need low-barrier secondary development in PHP
- you want multiple themes and optional AI error explanation features

## When to avoid
- you need a judge for languages outside C/C++/Java/Pascal ecosystems without extra setup
- you prefer modern stacks (Node, Go) or container-native microservice judging
- you need Windows-native deployment
- you require a fully managed SaaS without self-hosting

## Facets
- artifact type: application
- maturity: active
- function: web-framework, http-server, database
- domain: education, web-development, developer-tools
- platform: php, cpp, self-hosted
- tags: online-judge, competitive-programming, acm-icpc, noip, code-submission, auto-grading, education, self-hosted, php, mysql, sandbox, code-execution, algorithms, linux, docker, web-server

## Member repositories
- zhblue/hustoj (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:18.493910+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:27:44.683625+00:00, confidence not recorded.
  - readme: https://github.com/zhblue/hustoj (fetched 2026-08-28T04:08:18.493910+00:00, sha 07319fcc5396)
  - homepage: http://www.hustoj.com/?cat=2 (fetched 2026-08-29T09:22:38.434488+00:00, sha 4b1d2c64a2b6)
- Data as of 2026-08-30T08:39:29.467469+00:00.