Viber, the multi-platform messaging app that grew to take on heavyweight champ What's App (and now Facebook Messenger and iMessages) has just released version 4.0 of its desktop client for OS X. The update comes almost two weeks after Viber released its updated iOS client.
As with its iOS app, Viber 4.0 adds several new features for the Mac, including a sticker marketplace. Stickers are images, similar to emojis, that Viber users can send to one another to convey a message or emotion. They've proved so popular on Viber's mobile apps that the company is now using them to monetize across all platforms -- including desktop with this latest release for OS X.
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