Rovi Corp. (extinct)

Comcast Corporation (Nasdaq: CMCSA, CMCSK) is a global media and technology company with two primary businesses, Comcast Cable and NBCUniversal. Comcast Cable is the nation’s largest video, high-speed Internet and phone provider to residential customers under the XFINITY brand as well as to businesses. NBCUniversal operates 30 news and entertainment cable networks, the NBC and Telemundo broadcast networks, television production operations, television station groups, Universal Pictures and Universal Parks & Resorts.

Microsoft Corp. engages in the development and support of software, services, devices, and solutions. It operates through the following business segments: Productivity and Business Processes; Intelligent Cloud; and More Personal Computing. The Productivity and Business Processes segment comprises products and services in the portfolio of productivity, communication, and information services of the company spanning a variety of devices and platform. The Intelligent Cloud segment refers to the public, private, and hybrid serve products and cloud services of the company which can power modern business. The More Personal Computing segment encompasses products and services geared towards the interests of end users, developers, and IT professionals across all devices. The firm also offers operating systems; cross-device productivity applications; server applications; business solution applications; desktop and server management tools; software development tools; video games; personal computers, tablets; gaming and entertainment consoles; other intelligent devices; and related accessories. The company was founded by Paul Gardner Allen and William Henry Gates III in 1975 and is headquartered in Redmond, WA.

Apple, Inc. engages in the design, manufacture, and sale of smartphones, personal computers, tablets, wearables and accessories, and other variety of related services. It operates through the following geographical segments: Americas, Europe, Greater China, Japan, and Rest of Asia Pacific. The Americas segment includes North and South America. The Europe segment consists of European countries, as well as India, the Middle East, and Africa. The Greater China segment comprises of China, Hong Kong, and Taiwan. The Rest of Asia Pacific segment includes Australia and Asian countries. Its products and services include iPhone, Mac, iPad, AirPods, Apple TV, Apple Watch, Beats products, Apple Care, iCloud, digital content stores, streaming, and licensing services. The company was founded by Steven Paul Jobs, Ronald Gerald Wayne, and Stephen G. Wozniak in 1977 and is headquartered in Cupertino, CA.