Judge0

Products

Robust, scalable, and open-source online code execution system that can be used 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.

Quick and easy installation
Rich and verbose API documentation
Scalable architecture
Sandboxed compilation and execution
Support for 60+ languages
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)

Read the research paper Get Started

Judge0 IDE

Free and open-source online code editor that allows you to write and execute code from a rich set of languages. It's perfect for anybody who just wants to quickly write and run some code without opening a full-featured IDE on their computer. Moreover, it is also useful for teaching and learning or just trying out a new language.

Get Started

Community Edition

You can choose between two flavors: Judge0 CE and Judge0 Extra CE.

The difference is just in the languages they support. Both flavors are open-sourced on GitHub and licensed under GPL-3.0.

Self-hosted

(On-premises)

Shared Cloud

(Shared SaaS)

BASIC	🌟 PRO⁽¹⁾	ULTRA	MEGA

Dedicated Cloud

(Dedicated SaaS)

HYBRID⁽²⁾	FULL⁽³⁾

Price

FREE

7 EUR / month

27 EUR / month

54 EUR / month

Support

🫂 Community⁽⁴⁾

🫂 Community

📧 Community and email support

📞 Direct support via email, phone, or web conference

Infrastructure

🚜 Yours

✈️ Ours

🚀 Ours

Updates

😕 Self update

✅ Automatic to the latest version

🤝 As you wish

Uptime

🤷 Depends on you

No SLA, but it's practically 99.9%

99.9% SLA

Available Regions

❓ Wherever you want

🌎 North America, Europe, and Asia. Geolocation routing to closest region.

📍 One region of your choice (North America, Europe, or Asia)

Submissions

Unlimited

Limited at 50 / day

Unlimited, includes 500 / day,
then 0.001 EUR / submission

Unlimited, includes 2000 / day,
then 0.001 EUR / submission

Unlimited, includes 5000 / day,
then 0.001 EUR / submission

Unlimited, custom daily quota,
then 0.001 EUR / submission

Batched Submissions

Unlimited

Limited at 50 / day

Unlimited, includes 500 / day,
then 0.001 EUR / batched submission

Unlimited, includes 2000 / day,
then 0.001 EUR / batched submission

Unlimited, includes 5000 / day,
then 0.001 EUR / batched submission

Unlimited, custom daily quota,
then 0.001 EUR / batched submission

Install

⁽¹⁾ Closest to a pay-per-use model. Perfect if you don't expect consistent daily usage.

⁽²⁾ Hybrid Dedicated Cloud features semi-separated infrastructure from the Shared Cloud. Your HTTP requests are handled by your dedicated infrastructure, but your submissions are run on both shared and dedicated infrastructure.

⁽³⁾ Full Dedicated Cloud features completely separate infrastructure from the Shared Cloud.

Clients