Judge0 CE

Robust, scalable, and open-source online code execution system.

Table of Contents

• About
• Features
• Get Started
• Flavors
• Supported Languages
• References
• Citation
• Community
• Author and Contributors
• Changelog
• Special Thanks
• License

About

Judge0 (pronounced like "judge zero") is a robust, scalable, and open-source online code execution system. You can use it to build a wide range of applications that need online code execution features. Some examples include competitive programming platforms, e-learning platforms, candidate assessment and recruitment platforms, online code editors, online IDEs, and many more.

In our research paper Robust and Scalable Online Code Execution System, we present Judge0's modern modular architecture that can be easily deployed and scaled. We study its design, comment on the various challenges in building such systems, and compare it with other available online code execution systems and online judge systems.

To see Judge0 in action, try Judge0 IDE - our free and open-source online code editor.

Features

• Quick and easy installation
• Rich and verbose API documentation
• Scalable architecture
• Sandboxed compilation and execution
• Support for 60+ languages
• Compilation and execution of multi-file programs
• Support for additional files alongside the user's program
• Support for custom user-defined compiler options, command-line arguments, and time and memory limits
• Detailed execution results
• Webhooks (HTTP callbacks)

For more information about these and other features, please read the documentation.

Get Started

Get started with Judge0 today on Sulu and get 20K Free Submissions to try it when you sign up.

You can also get started with the FREE Basic Plan on RapidAPI or host it yourself.

You can find our detailed plans and pricing here. So far our clients have run with us more than programs.

Why should you use Judge0 on Sulu or RapidAPI?

Our infrastructure allows you to focus on building your product and forget about the know-how of maintaining and scaling Judge0.

Sulu or RapidAPI plans are not (good) enough for you?

Let's talk. Contact us.

Flavors

Judge0 comes in two flavors: Judge0 CE and Judge0 Extra CE. They differ mostly in the supported languages.

You can find the source code for Judge0 CE on the master branch, while you can find the source code for Judge0 Extra CE on the extra branch.

Judge0 Extra CE is also available on Sulu and RapidAPI.

Supported Languages

Judge0 comes in two flavors: Judge0 CE and Judge0 Extra CE. They differ mostly in the supported languages.

Judge0 CE

Click here to expand the list

#	Name
1	Assembly (NASM 2.14.02)
2	Bash (5.0.0)
3	Basic (FBC 1.07.1)
4	C (Clang 7.0.1)
5	C (GCC 7.4.0)
6	C (GCC 8.3.0)
7	C (GCC 9.2.0)
8	C# (Mono 6.6.0.161)
9	C++ (Clang 7.0.1)
10	C++ (GCC 7.4.0)
11	C++ (GCC 8.3.0)
12	C++ (GCC 9.2.0)
13	Clojure (1.10.1)
14	COBOL (GnuCOBOL 2.2)
15	Common Lisp (SBCL 2.0.0)
16	D (DMD 2.089.1)
17	Elixir (1.9.4)
18	Erlang (OTP 22.2)
19	Executable
20	F# (.NET Core SDK 3.1.202)
21	Fortran (GFortran 9.2.0)
22	Go (1.13.5)
23	Groovy (3.0.3)
24	Haskell (GHC 8.8.1)
25	Java (OpenJDK 13.0.1)
26	JavaScript (Node.js 12.14.0)
27	Kotlin (1.3.70)
28	Lua (5.3.5)
29	Objective-C (Clang 7.0.1)
30	OCaml (4.09.0)
31	Octave (5.1.0)
32	Pascal (FPC 3.0.4)
33	Perl (5.28.1)
34	PHP (7.4.1)
35	Plain Text
36	Prolog (GNU Prolog 1.4.5)
37	Python (2.7.17)
38	Python (3.8.1)
39	R (4.0.0)
40	Ruby (2.7.0)
41	Rust (1.40.0)
42	Scala (2.13.2)
43	SQL (SQLite 3.27.2)
44	Swift (5.2.3)
45	TypeScript (3.7.4)
46	Visual Basic.Net (vbnc 0.0.0.5943)

Judge0 Extra CE

Click here to expand the list

#	Name
1	Bosque (latest)
2	C (Clang 10.0.1)
3	C (Clang 9.0.1)
4	C# (.NET Core SDK 3.1.302)
5	C# (Mono 6.10.0.104)
6	C# Test (.NET Core SDK 3.1.302, NUnit 3.12.0)
7	C++ (Clang 10.0.1)
8	C++ (Clang 9.0.1)
9	C++ Test (Clang 10.0.1, Google Test 1.8.1)
10	C++ Test (GCC 8.4.0, Google Test 1.8.1)
11	C3 (latest)
12	F# (.NET Core SDK 3.1.302)
13	Java (OpenJDK 14.0.1)
14	Java Test (OpenJDK 14.0.1, JUnit Platform Console Standalone 1.6.2)
15	MPI (OpenRTE 3.1.3) with C (GCC 8.4.0)
16	MPI (OpenRTE 3.1.3) with C++ (GCC 8.4.0)
17	MPI (OpenRTE 3.1.3) with Python (3.7.7)
18	Nim (stable)
19	Python for ML (3.7.7)
20	Visual Basic.Net (vbnc 0.0.0.5943)

References

Companies, Organizations, and Projects

These companies, institutions and organizations use Judge0.

Scientific Articles

These scientific articles mention Judge0.

• A Game-Changing Instructor Tool to Reinforce Coding Concepts
• Building a Comprehensive Automated Programming Assessment System
• Voice-Enabled Intelligent IDE in Cloud
• Big Data based Advanced Lab Analysis System using Apache Spark
• Online Automatic Assessment System for Program Code: Architecture and Experiences
• A comparison between online compilers: A Case Study
• Online Judge System: Requirements, Architecture, and Experiences
• Nacionalni repozitorij završnih i diplomskih radova ZIR
• Pengembangan Sistem Manajemen Evaluasi Pembelajaran Terintegrasi Dengan Online Judge
• Rancang Bangun Sistem Online Judge dan Pendeteksian Plagiarisme Menggunakan Arsitektur Serverless
• Платформа для спільної роботи викладача та студента під час іспиту
• Grid-Coding: An Accessible, Efficient, and Structured Coding Paradigm for Blind and Low-Vision Programmers
• Desarrollo de una plataforma orientada al refuerzo en la evaluación del nivel de programación
• Web aplikacija za provjeru programskog koda
• Web-aplikacija za obavljanje i dijeljenje programskih odsječaka u različitim programskim jezicima
• Prototip integracije sustava za strojno učenje u sustav Edgar
• Web-aplikacija za rješavanje programskih zadataka s elementima društvene mreže
• Analiza performansi sustava za udaljeno izvršavanje programskog kôda
• Repozitorij Fakulteta elektrotehnike i računarstva Sveučilišta u Zagrebu
• Usability and Security of Trusted Platform Module (TPM) Library APIs
• Protótipo de uma ferramenta gamificada para a aplicação de atividades práticas em sala de aula em uma disciplina de introdução à programação
• A Strategy Based on Technological Maps for the Identification of the State-of-the-Art Techniques in Software Development Projects: Virtual Judge Projects as a Case Study
• ПОЯСНЮВАЛЬНА ЗАПИСКА ДО БАКАЛАВРСЬКОЇ РОБОТИ на тему ТРЕНАЖЕР З ТЕМИ «ПОБУДОВА БЛОК-СХЕМ АЛГОРИТМІВ ЦИКЛІЧНОЇ СТРУКТУРИ НА ПРИКЛАДІ ЦИКЛУ WHILE» ДИСТАНЦІЙНОГО НАВЧАЛЬНОГО КУРСУ «ПРОГРАМУВАННЯ ІІ» ТА РОЗРОБКА ЙОГО ПРОГРАМНОГО ЗАБЕЗПЕЧЕННЯ
• Scaling Automated Programming Assessment Systems
• Full-stack web development for auto-assessment platform
• A Secure and Scalable System for Online Code Execution and Evaluation using Containerization and Kubernetes
• Thinking beyond chatbots' threat to education: Visualizations to elucidate the writing and coding process
• Advanced lab analysis system using apache spark
• Programmable Questions in Edgar
• Automatic Evaluation of Student Software Solutions in a Virtualized Environment
• Automatic question generation for JavaScript programming courses

Other Online References

• Designing Online Judge or Leetcode
• Make your own online compiler in React
• Programski jezik Go - FER 2019./2020. - Prvo predavanje
• Sudjelovanje FER-a na Smotri Sveučilišta 2019.
• Svečana 672. sjednica Fakultetskog vijeća FER-a
• USACO Guide - Running Code Online
• Web application for authoring and sharing code snippets in different programming languages
• Let’s Deploy our Online Code Executor in Google Cloud
• Let’s Develop an Online Code Editor & Compiler like HackerRank
• Let’s Develop An Online Code Editor/Compiler Like HackerRank
• Build a Live Code Editor & Playground like HackerRank Using Vue
• Top 11 Java IDEs and Online Compilers for Productive Development
• How to Build a Code Editor with React that Compiles and Executes in 40+ Languages
• How to Build an Online Java Compiler
• Top 33 Best Cloud IDE For The Developers (2022 Review)
• 21 Productivity Apps for Programmers
• Running sqlite on the browser
• How to self-host Judge0 API on your PC locally | All you need to know
• Summer Internship Experience '21
• Best Websites Every Programmer Should Visit
• Excellent Online Code Editors
• A pair programming platform to help you get better at technical interviews: building out the platform
• 10 Amazing Free Tools For Your Blog Posts And Developer Projects
• The Easiest Way to Start Coding!
• How to create a code editor for 40+ languages ​​with React
• Tutorial isi api key di pc platform
• The ultimate guide to choosing a Compiler API for your workflow
• How to Build a Code Editor with React that Compiles and Executes in 40+ Languages
• LitCode
• Judge0 Sandbox Escape
• Building a Leetcode clone backend

Citation

Please cite us if you found the resources in this repository useful.

@INPROCEEDINGS{9245310,
  author={Došilović, Herman Zvonimir and Mekterović, Igor},
  booktitle={2020 43rd International Convention on Information, Communication and Electronic Technology (MIPRO)},
  title={Robust and Scalable Online Code Execution System},
  year={2020},
  volume={},
  number={},
  pages={1627-1632},
  doi={10.23919/MIPRO48935.2020.9245310}}

Community

Do you have a question, feature request, or something else on your mind? Or you want to follow Judge0 news?

• Subscribe to Judge0 newsletter
• Join our Discord server
• Watch asciicasts
• Report an issue
• Contact us
• Schedule an online meeting with us

Author and Contributors

Judge0 was created and is maintained by Herman Zvonimir Došilović.

Thanks a lot to all contributors for their contributions to this project.

Changelog

You can find the detailed specification of changes between versions in CHANGELOG.md.

Special Thanks

Special thanks to open-source projects without whom Judge0 probably wouldn't exist: Isolate, Docker, Ruby on Rails and others.

License

Judge0 is licensed under the GNU General Public License v3.0.