Experimentation Local Interface (ELI) is a Chrome extension designed for web developers focusing on experimentation and A/B testing. It offers features such as flexible project organization, a robust variant system, and direct imports of HTML, SCSS, and JS files. The hot reloading functionality allows developers to see changes in real-time, enhancing efficiency during the development process. The extension also includes options for easy injection of selected projects and variants onto web pages, along with auto-injection capabilities for seamless testing.

This tool is particularly beneficial for frontend developers and teams involved in creating and testing web experiments. By organizing projects in variant folders and utilizing the included local development server, users can quickly iterate on their designs. ELI ensures that all data remains local, with no external transmissions, and stores preferences directly in the browser, making it a secure choice for developers looking to optimize their workflow.