The Ullstein Verlag was founded by Leopold Ullstein in 1877 at Berlin and is one of the largest publishing companies of Germany. It published newspapers like B.Z. and Berliner Morgenpost and books through its subsidiaries Ullstein Buchverlage and Propyläen.

Axel Springer SE is a German multinational mass and online media company, based in Berlin, Germany. The company offers printing and publishing of advertisements, digital classifieds portfolio, marketing models and related services. Axel Springer's operations are segmented into News Media, Classifieds Media, and Marketing Media. The company is organized as a societas Europaea (SE) publishing house and is one of the largest mass media publishers in the European Union, with numerous multimedia news brands, such as Bild, Die Welt, Fakt, and the US political news site Politico, which Axel Springer acquired in 2021.