Microsoft Corporation is a multinational computer technology corporation that develops, manufactures, licenses, and supports
a wide range of software products for computing devices. Headquartered in Redmond, Washington, USA, its most profitable products
are the Microsoft Windows operating system and the Microsoft Office suite of productivity software. The company was founded
to develop and sell BASIC interpreters for the Altair 8800.
Apple Inc. is an American multinational corporation that designs and manufactures consumer electronics and computer software
products. The company's best-known hardware products include Macintosh computers, the iPod and the iPhone.
VTech is the common name of Video Technology Ltd. , a Hong Kong-based manufacturer of consumer electronics. VTech products
include cordless telephones and accessories, single-function computers such as email appliances, and simple computerized educational
toys for children, including the V. Smile and V. Flash. The company was founded in 1976 by entrepreneurs Allan Wong and Stephen
Leung, and as of 2007, had approximately 28,200 employees worldwide.
Psystar Corporation is a Miami, Florida based company which sells "Open Computers". These computers, first announced in April
2008, have the option to be pre-installed with Mac OS X Leopard, making them the first commercially distributed 'hacked' Macintosh
computers.