Blue Byte Software (now known as Ubisoft Blue Byte) is a German computer game developer based in Düsseldorf. The company, which had been active as a publisher for many years as well, is one of the most well known German developers.

Ubisoft Entertainment (pronounced yoo-bee-soft) is a French videogame developer and publisher, with its headquarters in Montreuil-Sous-Bois, France.