PrincessSoft was a Japanese company. It specialized in the development of visual novel video game ports for use on home video game consoles such as the PlayStation 2 and the Dreamcast. It had two imprints: Primavera, which specialized in female-oriented products, and Nine's Fox, which also released ports of adult visual novels. None of the three brands have released any products since 2009.

Initially it was a brand of Zero System, but was later transferred to Oaks Co., Ltd..

[Edited from Wikipedia]