Dev Messenger is a free Chrome extension developed by attiewilly. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This extension applies a dark console-like theme to the interface of Facebook Messenger.

The main purpose of Dev Messenger is to transform the appearance of Facebook Messenger, making it resemble a distraction-free console. By applying a dark background with bright letters, it provides a more resting experience for the eyes. This can be particularly beneficial for users who prefer a darker theme or those who spend a significant amount of time using Facebook Messenger.

With Dev Messenger, users can enjoy a sleek and minimalist interface that enhances their messaging experience on Facebook. The extension is easy to install and use, making it accessible for users of all levels of technical expertise.

If you're looking to customize the appearance of your Facebook Messenger and prefer a dark theme, Dev Messenger is a great option to consider.