About CodeCompiler

CodeCompiler is a free online compiler and code editor from ForgeSparse. Open a language, write code and run it — no installation, no setup and no account needed.

How your code runs

• 53 programming languages (Python, Java, C, C++, Go and more) are compiled and run in isolated sandboxes on the JDoodle execution service.
• 20 web languages and frameworks (HTML, CSS, React, Vue, Tailwind…) render live in a sandboxed preview inside your browser.
• 3 databases run entirely on your own device: real PostgreSQL (PGlite), a MongoDB query engine and a Redis-compatible engine.
• Other SQL databases use the SQLite engine — the editor says so clearly on those pages.

What you can do

• Run code with program input (stdin) and see output instantly.
• Ask the AI Agent to explain code, find bugs, add comments, optimize or review it.
• Create a free account to save your code privately or publicly, and share links to it.
• Embed the editor in your own website or call the execution API from your backend.

Who builds it

CodeCompiler is part of the ForgeSparse family of developer tools. Found a bug or have an idea? Use the bug icon in the editor or contact us — every message is read.