The company was founded as SWsoft in 1997 as a privately held server automation and virtualization company.[1] In 2000, the company released the first commercially available operating system-level virtualization container technology. In 2003, SWsoft acquired the makers of Confixx and Plesk web hosting products: Plesk Server Administration (PSA) control panel and Confixx Professional hosting software.[2] Virtuozzo was the core enabling technology behind SWsoft's HSP Complete solution.[3][2] In 2004, SWsoft acquired Parallels, Inc.
In 2005, the company open-sourced its operating system-level virtualization technology as OpenVZ. In 2007, SWsoft announced that it had changed its name to Parallels and would distribute its products under the Parallels name.[4][5][6]
In December 2015, Virtuozzo was spun out from Parallels to become a standalone company. In May 2016, Virtuozzo announced its intention to join the Open Container Initiative.
In July 2021, Virtuozzo acquired OnApp.[7] In October of that year, the company acquired Jelastic.[8]