BANGALORE, INDIA: The Linux operating system is the most popular open source operating system in computing today, representing a $25 billion ecosystem in 2008.

Since its inception in 1991, Linux has grown to become a force in computing, powering everything from the New York Stock Exchange to mobile phones to supercomputers to consumer devices.

As an open operating system, Linux is developed collaboratively, meaning no one company is solely responsible for its development or ongoing support. Companies participating in the Linux economy share research and development costs with their partners and competitors. This spreading of development burden amongst individuals and companies has resulted in a large and efficient ecosystem and unheralded software innovation.

Over 1,000 developers, from at least 100 different companies, contribute to every kernel release. In the past two years alone, over 3,200 developers from 200 companies have contributed to the kernel.2 It’s important to note that the kernel is just one small piece of a Linux distribution.

A distribution is actually made up of multiple components including the kernel, the GNOME and KDE desktop environments, the GNU components, the X window system, and many more. The total of individual developers contributing to these projects surely numbers in the thousands.

Because Linux has been developed collectively, there is no single source for cost estimates of how much it has taken to develop the technology.

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