Computer industry is a collective term used to describe the whole range of businesses involved in developing computer software, designing computer hardware and computer networking infrastructures, the manufacture of computer components and the provision of information technology services.

The software industry compromises of businesses involved in the development, maintenance and publication of computer software. The software industry started in the mid-1970s at the time of the personal computer revolution. The industry also includes software services, such as training and consultancy. The largest and most profitable of software companies are located in the United States. As of 2006, the software industry is dominated by Microsoft. Software Magazine's 500 list in 2005 shows the total amount of revenue brought in by software companies per locale, with the highest being California due to Silicon Valley and the amount of Fortune 500 software companies residing in that area. more information...