Judge0 is a robust and scalable open-source online code execution system.
Judge0 can help you build wide range of applications varying from competitive programming platforms, educational and recruitment platforms, to online code editors and more.
To see Judge0 in action, try Judge0 IDE - free and open-source code editor that uses Judge0 for executing the user’s source code.
- Quick and easy installation.
- Supports more than 45 languages.
- Runs source code in a secure and reliable sandbox.
- Send multiple source code files and any other files. Demo.
- Set custom compiler options. Demo.
- Set custom command line arguments. Demo.
- Set time and memory limits.
- HTTP callbacks.
- And many more.
For more information check out https://api.judge0.com.
Read the research paper about Judge0.
or deploy on your server.
These companies, organizations and projects successfully use Judge0 in production:
- Ask To How
- Brilliant Hire
- Code Compiler Lite - online mobile code compiler for Android
- CodeManiacs - an online judge for IIT Mandi
- Dilla University
- Georg-August University of Göttingen
- Indian Institute of Technology Mandi
- Institute of Aeronautical Engineering
- Interview Sandbox
- JavaJudge0Api - a Java library for interacting with Judge0
- Judge Code Online
- KPR Institute of Engineering and Technology
- KodKarate - an open-source IDE
- Newton School
- Picode - an online code playground
- REVA University
- Soft CodeOn
- Techie Delight
- Think exam
- University of Zagreb, Faculty of Electrical Engineering and Computing
- VS Code App - lightweight universal IDE for iOS / iPadOS with full iCloud Drive support
- judge0-gem - Ruby Gem for interacting with Judge0
- judge0_helm - Helm Chart for Judge0
- judge0api - Python library for interacting with Judge0
- uDebug Tool
Do you have a question, feature request or something else on your mind? Or you just want to follow Judge0 news? Check out these links:
- Subscribe to Judge0 newsletter
- Join a Discord server
- Watch asciicasts
- Report an issue
- Contact the author
- Get free online support
- Schedule an online meeting with the author
Author and Contributors
Judge0 was created by Herman Zvonimir Došilović.
Thanks a lot to all contributors for their contributions in this project.
Detailed specification of changes between versions can be found in CHANGELOG.md.
Judge0 is licensed under the GNU General Public License v3.0.