Write code.
Execute instantly.

A blazing fast, lightweight environment designed specifically for Windows. Forget the complex configurations and just focus on the logic.

Windows may show a SmartScreen warning — click "More info" → "Run anyway" to install.

Built for speed and simplicity.

Everything you need to write and test code, packaged in a lightweight native application.

Instantly switch between languages. No json files to edit, no build tasks to configure.

Optimized specifically for Windows 10/11. Starts up in milliseconds.

Compiler errors are parsed and displayed beautifully to help you fix bugs faster.

No internet required. Your code compiles and runs entirely on your local machine.

CodeRunner is completely free for individual use.

$0 / forever