Judge0
Code execution made simple for every business
Judge0 is an open-source, sandboxed online code execution system designed to securely compile and run code from over 60 programming languages. It solves the challenge of safely executing untrusted code in applications, whether for human users or AI agents, by providing an isolated environment that prevents malicious or erroneous code from affecting the host system.
Its core offering is the Judge0 API Platform, which provides a scalable architecture for sandboxed compilation and execution. Key capabilities include support for 60+ programming languages, handling additional files alongside user programs, custom input, user-defined compiler options, command-line arguments, and configurable time and memory limits. It also offers detailed execution results, webhooks for HTTP callbacks, and works with AI agents. The product family includes a free, open-source online code editor (Judge0 IDE) and a mobile app (Judge0 Mobile IDE) for iOS and Android.
Judge0 is intended for developers and businesses building applications that require online code execution, such as AI-generated code execution, competitive programming platforms, e-learning tools, candidate assessment systems, and online IDEs. It is available as a self-hosted solution or through cloud plans. The cloud plans are subscription-based with a daily submission allowance and a per-extra-submission fee, with tiers designed for growing teams, established businesses, and high-volume enterprise use.
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