Tizen OS
Now we see Samsung’s secret weapon in the mobile wars, the Tizen OS. It was officially announced at Mobile World Congress 2013. 
The Tizen 2.0 operating system is based on Linux and will be very much similar to that of Android. It is through this that Tizen plans to compete with Google and Apple. A few members of the Tizen family are Panasonic, Vodafone, Orange, Docomo and Sprint. These carriers along with Samsung are going to help Tizen make its mark.
Samsung has shown its backing by announcing to stop further development on the BADA OS and thereby shifting its focus to Tizen. Tizen is a more open OS for carriers to tinker with. NTT Docomo has committed to being the first carrier to sell a Tizen smartphone, and CNET earlier broke the story that the first Tizen phones, made by Samsung, would debut in July or August.
The Tizen Association has already been working on lots of applications and although they aren’t giving us an exact number, it’s safe to say that there are over hundreds or even thousands of apps ready to be used. Tizen is not worried about rivaling the Firefox OS because its cutting-edge HTML5 support should ensure that it can match Firefox OS, at least in terms of mobile web apps. The Tizen Association has always felt strongly about HTML5, ever since the evolution from Meego began. Samsung also plan on adding support to run Android apps on Tizen as a plan b. But if Tizen can stand on its own and attract developers without dangling a compatibility layer Samsung will not need a plan b.
From a first viewing there were some clear differences between Tizen and Android, like for example all the apps are on the home screen similar to in the iOS. And there is a pull down bar for notifications instead of having the notifications screen appearing on top of the current screen.
The OS is still in its early stages so we can expect more. And we can trust Samsung to take this pretty far. So Google better watch out. The balance of power may shift.