Cisco Systems, Inc. is an American multinational corporation technology company headquartered in San Jose, California, that designs, manufactures and sells networking equipment worldwide. It is the largest networking company in the world. The stock was added to the Dow Jones Industrial Average on June 8, 2009, and is also included in the S&P 500 Index, the Russell 1000 Index, NASDAQ-100 Index and the Russell 1000 Growth Stock Index.

Hewlett Packard Enterprise (HPE) is an American multinational information technology enterprise company, founded 1 November 2015 as part of the now-split Hewlett-Packard company.

Hitachi Data Systems (HDS) is a company that provides modular mid-range and high-end computer data storage systems, software and services. It is a wholly owned subsidiary of Hitachi Ltd. and part of the Hitachi Information Systems & Telecommunications Division. In 2010 Hitachi Data Systems sold through direct and indirect channels in more than 170 countries and regions. Its customers included over half of the Fortune 100 companies at the time.

IBM manufactures and markets computer hardware, middleware and software and offers infrastructure, hosting and consulting services in areas ranging from mainframe computers to nanotechnology.