Desktop Messenger for WhatsApp is an unofficial WhatsApp add-on for browsers (Firefox, Chrome and Opera) that can display incoming messages, new posts and direct replies within browser add-on bar.
Although technically it isn’t actually a stand-alone desktop application that can sign-in directly to WhatsApp without mobile devices , it provides a quicker way to access WhatsApp Web without navigating to a separate window to use it.
It is available for different browsers :
For FirefoxFor Google Chrome
For Opera
Once installed, an icon will show up.
Clicking on that will lead to the QR code authentication window.
From the mobile device, access WhatsApp settings > WhatsApp Web version and sign-in.
The add-on lists the settings for various mobile devices.
Once signed-in to web version, new message notifications will be displayed by the add-on and clicking on it will open the WhatsApp Web window directly in same tab.
This add-on can also be configured for dimensions as well as shortcut keys for quick access. Select the settings icon.
Then, configure shortcut keys and toolbar size as needed.
All done.