Viber for Mac and Windows, as you’d expect, syncs your contacts, messages and call history with your mobile devices. Go past the fold for an introductory video and more tidbits… Moreover, Viber – which was founded by American-Israeli entrepreneur Talmon Marco – has revamped its mobile iOS/Android client with video messages, an improved voice engine said to help improve call quality and lots more. The much-welcomed software release now enables one to keep their communication in sync across mobile and desktop devices because in addition to desktop, Viber is now available on iOS, Android, Windows Phone, BlackBerry, Nokia and Bada platforms.

Small wonder then that Viber in a major move on Tuesday announced a brand new desktop application for Mac and Windows PCs. Available as a free download from the Viber’s web site, Viber for Mac lets you send free messages as well as make free calls to other Viber users. Not only did WhatsApp take the lead – the service claims to handle an astounding eighteen billion messages every day – but the search monster Google is getting ready to unify its many chat services under a new Bable IM brand. Viber, the popular instant messaging service and WhatsApp’s chief rival, has fallen behind a bit in the past year or so.

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