What is Parallels Plesk?, Plesk is a server management system developed by Parallels, which can work on both Windows & Linux operating systems, thanks to the flexibility and diversification in operating structure across operating systems. As a popular practice, Plesk has grown strongly and is chosen by many businesses for its server management solution, the management system is clearly decentralized along with the ability to provide security and deeply intervene in the system to help Plesk Easily manage and decentralize users, with vista friendly management interface, Plesk is increasingly asserting its position and the number one choice in server management today..