Desktop App for WhatsApp™ WEB is a Chrome extension developed by capitan.ext.dev. It is a free program that falls under the category of Browsers and the subcategory of Add-ons & Tools.

This app allows users to chat on WhatsApp directly from their desktop and receive instant notifications of new messages in their browser without having to open the WhatsApp website. With this app, users no longer need to constantly check their phones for new messages in WhatsApp.

Some of the main features of the app include one-click access to WhatsApp, notifications of new messages (with optional sound), and the ability to check the number of new messages on the extension badge near the browser's address bar. Additionally, the app ensures that there is only one WhatsApp tab opened in the browser.

It is important to note that this app is not an official product for WhatsApp Web and is not affiliated with WhatsApp Inc. It is simply a convenient extension developed by capitan.ext.dev to enhance the WhatsApp experience on desktop. Feedback and questions are welcomed by the developer.