Mac OS X YosemiteMac OS X Yosemite is the latest release of OS X. It was developed by Apple Inc. and released to consumers on October 16, 2014. Its latest version is the 10.10.4, which dates back from June 30, 2015.
Mac OS come pre-installed in Apple products. However, they are designed to work efficiently on the last one, or a new one. Therefore, Mac OS won't work on old Macintosh computers. For example, Mac OS X Yosemite only works on 7 models.
All Mac OS are free and are closed-source, but have some open-source components. That's why, to get this operating system, you must buy an Apple product which has it installed.
Windows 10Windows 10 is a PC operating system developed by Microsoft. It was announced in September 2014, and it became available to general public in July 29, 2015. Its predecessor is Windows 8.1, an update of Windows 8. Microsoft announced that Windows 10 would be free of charge to people with a genuine license of Windows 7 and 8, for the first year, in order to encourage its adoption.
The aim of Windows 10, according to Microsoft, is to unify the Windows operating system across different kinds of Microsoft devices, such as smartphones, PCs, tablets and more. It has introduced some new things, like a new default browser, named Microsoft Edge which replaces Internet Explorer. Microsoft also took into account the revisions of previous OS. Therefore, it added a Start Menu similar to Windows 7 but it kept the live tiles, as well as many other things from Windows 8 and other previous OS.
Windows 10 can be installed in personal computers, and it doesn't come pre-installed. That means that, in opposition to Mac OS X Yosemite, you buy the license from Microsoft to use the OS and install it in a computer, instead of having to buy a device which already comes with the OS pre-installed.
This OS is not free unless you match the conditions above. Due to the existance of 4 different editions of Windows 10 (Home, Pro, Education and Enterprise), the prices may vary significantly. It is unnecessary to say that Windows 10, just like the predecessors, is closed-source.
GNU/LinuxLinux is an operative system released on 1991, based on Linux kernel, developed by Linus Torvalds. It is free and open-source, as well as its development and distribution. Even though it's the biggest open-source operating system, it is used only on around 1.5% of desktop computers.
Unlike Windows and Mac OS, Linux doesn't have versions or updates. However, some companies or people from the community develop, modify and distribute Linux with this editions. Some of the most popular are Linux Mint, Ubuntu and openSUSE. It has attracted developers since it came out, because it is open-source. It consumes a low amount of resources, which makes a processor be more efficient than with other OS, such as Windows.
The community contributes to develop this operating system, and there isn't a version of Linux which is released with updates and modifications. Each user can freely modify it as it is based on Linux Kernel. This means that there isn't a standard GNU/Linux OS version, but hundreds and hundreds of them.
For further information, you can click in one of the following links: Mac OS X Yosemite, Linux, Windows 10, Apple Inc., Microsoft, Linus Torvalds, operating system, software licenses.
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