The Darwin kernel of Mac OS X is open source, as are many other parts of the OS. (See links below) but Mac OS X itself is not open source and Apple only allows it to run on Apple hardware.
Apple ][, because Apple donated them to schools in larger quantities than other early microcomputer companies donated theirs.
Usually Barnes and Nobles has Nooks and Amazon.com sells Kindles. Apple has the iPad that functions as other entertainment other than book reading.
The first computer that Apple made set itself apart from other companies by making a computer that looked different in box design. The company was also run differently than other companies by giving employees more autonomy. Finally, Apple executives all work together in a "cloud," making decisions together about all aspects of the company, creating a better flow of information between departments.
Not much since other mp3s beside Apple iPods hold about 25% of the mp3 market share. And also cars pollute way more than mp3 companies.
Apple does not make portable speakers for ipods but other companies such as sony and logitech do. They work great, some better than others. Testing products help pick the right one as well.
The first computer that Apple made set itself apart from other companies by making a computer that looked different in box design. The company was also run differently than other companies by giving employees more autonomy. Finally, Apple executives all work together in a "cloud," making decisions together about all aspects of the company, creating a better flow of information between departments.
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I believe the only laptops Apple has are Macs.
You can't. Apple doesn't want anything other than Apple with Apple. Sorry. Apple is a jerk.
Other companies are not allowed to produce Pixar films, other than PixarCanada.
Most external hardware components have become somewhat standardized and may be substituted by products made by other companies. Most of the software used on Macintosh computers, other than the Operating system: OS-X which is required to make it operate is not produced by Apple.
Apple juice.