Judge0

Judge0

Robust and scalable code execution system for humans and AI.

hermanzdosilovic
@hermanzdosilovic
Published on Jan 14, 2026
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$10k MRR
75 PeerPush
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Ranked #1
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PeerPush

Details

Platforms
WebAPI

About Judge0

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 AI agents, competitive programming platforms, e-learning platforms, candidate assessment and recruitment platforms, online code editors, online IDEs, and many more.

Product Insights

Judge0 is an open-source, API-based code execution system designed for developers and educators to build applications requiring reliable server-side script running. It supports diverse platforms from AI agents to competitive programming environments through its scalable web architecture.

  • Open-source codebase allowing for transparent and flexible implementation.
  • Scalable API architecture designed for high-concurrency code execution environments.
  • Broad application support including AI agents, competitive programming, and e-learning.
  • Availability across Web and API platforms for seamless developer integration.

Ideal for: Developers, backend developers, and educators can utilize this system for building AI agents, candidate assessment tools, and online IDEs.

Product Video

Watch a video demo of Judge0.

Screenshots

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Comments (10)

Aarizzz
@Aarizzz

Wow amazing man! Can't wait to see the progress 😁

B
@borda989

So is it an IDE like VS Code, but with code already prebuilt?

hanscadx8
@hanscadx8

This is amazing i love it . Hoping to try it soon.

hermanzdosilovic
@hermanzdosilovic

You can try out Judge0 in action on https://ide.judge0.com!

hermanzdosilovic
@hermanzdosilovic

Or by running on of the snippets from screenshots directly in your terminal. You can c/p snippets from GitHub: - https://github.com/judge0/judge0 - https://github.com/judge0/judge0-python

alex5616
@alex5616

Awesome! Congrats on the launch! Who's your biggest competitor?

hermanzdosilovic
@hermanzdosilovic

Thank you! Judge0 exists since 2016 even though we launched/published today on PeerPush. :) The biggest Judge0 competitor is Cloudflare with their (recent) product Cloudflare Sandboxes (https://sandbox.cloudflare.com).

hermanzdosilovic
@hermanzdosilovic

Thrilled to launch Judge0 - our open-source, scalable code execution engine that's powering everything from AI-generated code runners to competitive programming platforms and more.