VPS

VPS or Virtual private servers is a form of virtualization that splits a single physical server into multiple virtual servers. The practice of partitioning a single server so that it appeared as multiple servers has long been common practice in mainframe computers, but has seen a resurgence lately with the development of software and technologies such as Virtuozzo, Xen, FreeBSD Jail, User-mode Linux, Linux-VServer, FreeVPS, OpenVZ, and VMware.

Web Hosting Company that provide VPS are :

Ensim
Ensim's award-winning product line includes control panels, virtual private servers, server management, as well as Microsoft Exchange hosting software.

H-Sphere
Hsphere is scalable multi-server, centralized hosting automation software with fully brandable resellers support, comprehensive recurrent billing, trouble ticket system as well as complete account provisioning automated signup. It supports Win2000, Linux & FreeBSD. It provides fully features, easy-to-use end user web based control panel, and powerful admin user interface.

SW-soft
SW-soft develops the Virtuozzo technology and the HSPcomplete hosting automation solution. SWsoft's products deliver powerful, comprehensive solutions that power data center management and provide excellent return on investment.

Sphera
Sphera is a leading developer of Web hosting automation and management software for Internet data centers, ISPs and hosting providers. Sphera's HostingDirector enables cost-cutting and revenue increases by automating Web hosting management, facilitating sales of value added applications, services and more.

These above hosting software firms develop popular and dependable VPS packages. Consider using a hosting firm that elects to use one of the above virtual private server systems.