Mobile messaging and calling application Viber has now come to the chrome operating system. Viber on the Chrome OS makes text, voice and video chats available to Chromebook, Chromebox users. Voice and video calls between Viber users are free, while calls to landline numbers have a fee.

This brings Viber on almost all platforms and the application is available on Android, iOS, Apple’s OS X, Windows, BlackBerry and Linux. It’s worth noting that its competitor WhatsApp does have voice calling but that’s not available on the chrome application. So maybe Viber could score a point over WhatsApp on that. But it will face stiff competition from existing communication applications such as Google’s Hangouts and Facebook’s Messenger.

Earlier this month, Viber claimed that it has crossed 40 million registered users in India and in February had 300 million registered users and 105 million monthly active users globally. Note that Viber had been acquired by Japanese membership-based Internet services company Rakuten for $900 million, in February last year. WhatsApp on the other hand has claimed that WhatsApp now has over 800 million monthly active users (MAUs). In November last year, WhatsApp claimed to have reached 70 million monthly active users (MAUs) in India. This was up from 65 million Indian MAUs in August last year, indicating that the company has added five million MAUs in the past two months.

Public chats: In November last year, Viber introduced a new public chats service where users could follow and interact with personalities and celebrities like Narendra Modi, Sachin Tendulkar and Priyanka Chopra. These public chats, which are essentially group chats viewable by anyone on the service, allow only a limited number of users to post messages, pictures, stickers and videos.