Without a license key, RunJS runs in a free tier with basic functionality, allowing you to execute code in real-time but restricting project management and advanced tooling.

RunJS is maintained by an independent developer (Luke Edwards). Purchasing a license directly supports the continued improvement of the tool. Managing Your License

Click on the menu (on macOS) or File/Help (on Windows/Linux). Select "License..." or "Activate." Paste your key into the field and click Activate . Why You Should Avoid "Cracked" License Keys