Corporation

A corporation was a type of company.

The 20th century company International Electromatics became INITEC by the 24th century, and still existed in the 30th century. Tobias Vaughn controlled it during all that time. (PROSE: Original Sin)

In 2107, Eurogen Company and the Butler Institute merged to form Eurogen Butler, generally known as the EB Corporation. Centuries later, after the Cyber-Wars, the EB Corporation changed its name to the Spinward Corporation. (PROSE: Deceit)

The Issigri Mining Company was founded in the early 22nd century. (TV: The Space Pirates) Shortly afterwards, it was renamed the Interplanetary Mining Corporation, or IMC for short. (PROSE: The Menagerie) It still existed in the 26th century. (PROSE: Love and War)

In 2157, the Earth Alliance of Corporations took control of Earth and its colonies. (PROSE: Lucifer Rising)

The Galatron Mining Corporation tried to obtain Zeiton-7 from Varos at a low price. (TV: Vengeance on Varos)

The Aapex Corporation conducted an illegal experiment on the planet Nooma as a template for the bioengineering and terraforming of low-gravity planets. The company eventually went bankrupt. (PROSE: Speed of Flight)

By 5,000,000,000, a corporation managed Platform One, moving it from one artistic event to another, including Earth Death. (TV: The End of the World)

Other realities
On Pete's World, Cybus Industries was a global mega-corporation which by 1996 had swallowed all competition. (WC: Tardisode 5, PROSE: The Time Traveller's Almanac) By 2007, the corporation had a complete monopoly on technology on the parallel world, and influence that was judged to be more powerful than governments. It was this power which allowed CEO John Lumic to initiate his "Ultimate Upgrade™ project" which created the Cybermen, resulting in millions of humans being converted and a global war between humans and Cybermen. (TV: Rise of the Cybermen, The Age of Steel, Doomsday.)