Microsoft

Microsoft's ambitions are anything but small. The world's #1 software company provides a variety of products and services, including its Windows operating systems and Office software suite. The company has expanded into markets such as video game consoles, servers and storage software, and digital music players. Microsoft has reached settlements to end a slew of antitrust investigations and lawsuits, including agreeing to uniformly license its operating systems and allowing manufacturers to include competing software with Windows. In early 2008 the company made an unsolicited bid to acquire Yahoo! for about $44.6 billion; Yahoo!'s board rejected the bid as "inadequate".

Hewlett-Packard

While Hewlett-Packard may be known for product innovation, the company's corporate development is a tale of reinvention. HP provides enterprise and consumer customers a full range of high-tech equipment, including personal computers, servers, storage devices, printers, and networking equipment. Its software portfolio includes operating systems, print management tools, and OpenView, a suite that encompasses application, business, network infrastructure, and product lifecycle management. HP also boasts an IT service organization that is among the world's largest.