The most popular one is the Android OS.
Android mobile OS is a Linux-based open sourced operating system from Google. It's mainly in touchscreen devices (smartphones, tablets), but is venturing into the laptop space.
Yes Mac OS is based on Linux
No, it is unix-based but Linux is a kernel not an operating system.Ubuntu,Linux Mint,Debian,and puppy Linux,ect. are OS's that use the Linux kernel.
A server that runs an operating system based on the Linux kernel.
Yes
No. Linux followed its own path in history. Linus Torvalds wanted to have an OS that was free and resembles unix. He made the source code open to the public and with the years the os grew in to what we call linux today.
The most common mobile operating systems (OS) used by modern smartphones include Google's Android, Apple's iOS, Microsoft's Windows Phone, Nokia's Symbian, RIM's BlackBerry OS, and embedded Linux distributions such as Maemo and MeeGo.
Google Chrome OS is an Operating System based on Linux. It basically is designed to work primarily with web apps.
No, it is not OS is not a Linux based operating system. Giggles is a search engine and created Chrome Operating system. Linux is its own brand of operating system.
Symbian OS
Yes, Linux is like an operating system much like Windows OS or Mac OS. Linux is kind of like a community of Operating Systems. A popular OS from Linux is Ubuntu.
If you are learning about Android OS as a consumer, you should be able to navigate through it as the learning curve is fairly low. For developers, there are various sites on how to utilize the operating system. An official site for Android developers is listed below under Related Links.