Siemens Nixdorf Informationssysteme, AG (SNI), was a separate company within Siemens until the late 1990s, and was the largest IT company in Europe. SNI sold the BS2000 operating system, a wide variety of databases, servers and other products. In the late 1990s it was split in parts, with the new company Wincor-Nixdorf taking over all banking and retail related business.