Xdebug-ext is a Firefox extension designed to enhance the debugging experience for PHP developers. It offers a simple installation process, where users can easily configure their 'IDE key', with PHPSTORM set as the default. The extension allows for precise control over debugging sessions, as it sets cookies per tab, enabling users to choose which tabs to debug and which to ignore. This feature is particularly beneficial for developers working on multiple projects simultaneously, as it streamlines the debugging workflow.

In addition to its user-friendly interface, Xdebug-ext facilitates an efficient debugging process, ensuring that developers can focus on writing quality code without the hassle of complex configurations. For those looking to dive deeper into debugging with Xdebug, additional resources are available online. Overall, Xdebug-ext stands out as a valuable tool in the web development category, tailored for developers seeking to optimize their debugging capabilities.