WebDev Mate is a Chrome extension developed by anthonyknight618 that serves as a handy assistant for web application development. It provides a convenient way to change the browser User-Agent when testing and developing web applications.

One of the key features of WebDev Mate is its User-Agent database. Users have the option to choose from an always up-to-date User-Agent database or manually set their own User-Agent. This allows developers to accurately test their web applications on different devices and browsers.

Another useful feature of WebDev Mate is the automatic loading of the up-to-date User-Agent database. This ensures that developers have access to the latest User-Agent information without any manual updates.

Overall, WebDev Mate is a valuable tool for web developers, offering an easy way to change User-Agent and test web applications on different devices and browsers.