Ruby Online Compiler
Write Ruby, press Run, read stdout below. Handy for quick scripts, learning, and interview prep — no rbenv or bundler on your machine.
Common questions
- Which Ruby version runs here?
- Ruby 3.x in an isolated Docker container. Standard library works; gems depend on what is pre-installed in the sandbox.
- Is signup required?
- No. Open the page and run code immediately.
- Can I share my code?
- Save with a title to get a shareable link.
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AI Agentcodeground-coder
Tell the agent what to build
It will inspect your code, think, and propose changes you can Keep or Discard inline.
- Explain what this code does
- Refactor this file for readability
- Add input validation and error handling
- Switch playground & scaffold Node.js
Ready
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Ruby