Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.
Pros: Most popular operating System, Easy to use, Applications and driver support,
Cons: Not free, restricted, no freedom, not very stable, Doesn't come pre installed with good applications, because of high usage, most spywares and viruses are targeted to this platform.
The operating system (OS) is the first thing loaded onto the computer -- without the operating system, a computer is useless.
Pros: Excellent user interface and usability, Stable & Secure, Includes applications, Easy installation of applications, Targeted less by viruses and Spywares.
Cons: Proprietary, The operating system is limited to a specific platform, Cost of ownership is high,
Pros: Free Software, Frequently updated, Excellent community, Easy installation, targeted less by viruses & spywares
Cons: Unstable, Might experience crashes, Installation may be difficult if your hardware is not standard, Lack of high quality professional software