Thinstall's software will ease administrative tasks by providing faster, easier and more secure delivery of software applications to desktop PCs, he said.Thinstall, based in San Francisco, decouples applications from underlying operating systems, improving application portability across desktop environments, VMware officials said. Other companies besides VMware are expanding their desktop-virtualization capabilities.For instance, last year Citrix Systems XenSource, a provider of open-source virtualization software.'Delivering software applications to an organization's workforce is the single largest cost of desktop administration today,' said Jeff Jennings, vice president of desktop products and solutions at VMware. VMware has agreed to buy Thinstall, a supplier of application-virtualization software, in a move designed to help organizations better provision, deploy and update desktop environments.Desktop virtualization, which allows servers to host desktop environments that can be tailored to meet the needs of specific users, is expected to gain momentum this year.

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