RunMyCode Online is a free and open-source tool that allows users to compile and run code online directly from Github, Gitlab, and Bitbucket. This convenient browser extension eliminates the need to set up a local development environment, making it ideal for quick code testing and experimentation.

To get started, simply install the extension and authenticate with your preferred provider (Github, Gitlab, or Bitbucket). Once authenticated, the extension will be automatically configured with your key.

When visiting a supported language code page on one of the supported websites, you will notice a colored "Run" button added to the left of the usual action buttons. Clicking this button opens a runner where you can input command line arguments and run the code on the page. Additionally, you can edit the code using the web editor on Github or Gitlab and run it through the same "Run" button.

RunMyCode Online supports a variety of programming languages and websites. The full list of supported languages and websites can be found on their FAQ page.

Overall, RunMyCode Online provides a convenient and hassle-free way to compile and run code online directly from popular code hosting platforms. It's a useful tool for developers and programming enthusiasts who want to quickly test and execute code without the need for a local development setup.