Watcher is a free Chrome extension developed by Salman Awan. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This handy tool is designed to save developers from the repetitive task of manually refreshing web pages during development.

With Watcher, developers can select and monitor resources on a page that are frequently updated. The extension automatically refreshes the inspected page whenever a change is detected in the user-selected source files included on the current page. This eliminates the need for developers to constantly hit the Refresh (F5) button, allowing them to focus on their work without interruptions.

Watcher is especially useful in modern rapid web application development environments like Node.js. It complements utilities such as nodemon and supervisor, enabling developers to fully automate their development process. By providing real-time updates, developers can instantly see their changes take effect, enhancing their productivity and streamlining their workflow.