Plesk (ex: Parallels Plesk Control Panel, Plesk Server Administrator, or just Plesk) software package is a commercial web hosting automation program. Originally released under the U.S. company Plesk Inc. and designed in Novosibirsk, Russia, Plesk was acquired by SWSoft in July 2003. SWSoft renamed themselves under the Parallels name (a brand which had been acquired by SWSoft) in 2008.