JavaScript-Java Bridge is a Firefox extension designed for web development, allowing Java Applets to interact seamlessly with JavaScript and the DOM. This tool addresses the deprecation of Java Applets and plugins, providing developers with a modern approach to integrate Java functionality into web applications. By utilizing this extension, developers can maintain existing Applet functionalities without the need for older browser or Java versions, ensuring compatibility with current technologies.

The extension operates under a subscription-based licensing model, allowing for evaluation and internal testing at no cost. However, a fee is applicable for production installations. This model promotes a balance between community development and the sustainability of software, encouraging enhancements and the potential for revenue sharing. With features aimed at facilitating efficient Java and JavaScript interactions, JavaScript-Java Bridge offers a robust solution for developers transitioning from legacy systems.